Walter B. Cannon Papers

Mss.B.C163.1

Date: 1905-1936 | Size: 3 Linear feet

Abstract

A key spokesman for the medical establishment against the antivivisection movement, Walter B. Cannon was head of the Council for the Defence of Medical Research of the American Medical Association from 1908 to 1936. He and his colleague William W. Keen monitored antivivisectionist activity, mobilized the medical profession, lobbied politicians, testified in public hearings, and wrote tirelessly in defense of animal experimentation. Cannon was George Higginson Professor of Physiology at Harvard Medical School and head of its physiology department. Keen was a prominent surgeon and neurologist from Philadelphia.

The Cannon Papers consist of over 1.5 linear feet of correspondence, 1905-1928, primarily between Cannon (1871-1945) and Keen (1837-1932) regarding their mutual opposition to the antivivisection movement.

Background note

Walter B. Cannon (1871-1945, APS 1908) was a physiologist and medical educator. He was widely noted for his trailblazing research in gastrointestinal physiology. He was the first to use the technology of X-rays to study gastrointestinal processes. He was a pioneer in studying the influence of emotional states on bodily functions and in "the understanding of nerve transmission and hormonal regulation of the body" (Lederer, p.340) and developed the concept of homeostasis. As a Harvard medical professor, he was the first to apply the case method to teaching systematic medicine. In his position as chairman of the American Medical Association's Defense Committee in Support of Medical Research, he led the fight against the Antivivisectionist movement. His major works include The Mechanical Factors of Digestion (1911), Traumatic Shock (1923), the Wisdom of the Body (1932) and Autonomic Neuro-Effector Systems (1937).

Canon was born on October 19, 1871 at Prairie du Chien, Wisconsin. He was the only son of Colbert Hanchett Canon, a railroad worker and Sarah Wilma Denio, a school teacher. He attended primary schools in Milwaukee, Wisconsin and St. Paul, Minnesota. At fourteen, when his father was disappointed at the boy's lack of diligence in school, he sent him to work in a railroad office for two years. After he returned to high school, he finished the four-year curriculum in three years, graduating as valedictorian of his class. He took an extra postgraduate year to prepare for college examinations. His English literature teacher Ms. M.J. Newson convinced Cannon to apply to Harvard College and helped to obtain financial aid for him. As a Harvard undergraduate he studied biology and zoology under Charles B. Davenport (1866-1944, APS 1907). He graduated summa cum laude in 1896 and received an M.A. degree from Harvard in 1897. Although he would have preferred to study medicine at Johns Hopkins, his letter to Hopkins's Dean William H. Welch, requesting financial aid went unanswered. Consequently, Cannon remained at Harvard for his medical training, entering the Medical School in the fall of 1896.

During his first year of medical school at Harvard, he followed the suggestion of physiology professor Henry P. Bowditch (1840-1911, APS 1904) that he join a second-year student Albert Moser in an investigation of the phenomena of swallowing and the visceral movements in animals using the recently developed technology of x-rays. Using an x-ray apparatus provided by Dr. Ernest Amory Codman of Massachsetts General Hospital, the two students examined the esophagus of a dog during the process of swallowing or deglutition. An initial demonstration, using pearl buttons revealed nothing. However, recalling the observation of Wilhelm Röntgen, who discovered x-rays a year earlier, that salts of heavy metals obstructed the passage of x-rays, they tried the same experiment, using gelatin capsules filled with bismuth subnitrate in a frog and a goose. This time the experiment succeeded, since bismuth subnitrate is opaque to x-rays. At a Boston meeting of the American Physiological Society in late December they repeated the experiment in a goose, using Röntgen's rays. This was the first public demonstration of the movement of the alimentary canal by use of x-ray technology. Cannon's continued investigation into the digestive system would later result in his first monograph, Mechanical Factors of Digestion (1911). In it, he noted with great interest the correlation between emotional disturbances and the digestive process in animal subjects.

While in medical school Cannon also showed himself an educational innovator. Envious of the educational experiences of his roommate, a Harvard law student, who reported that he and his classmates discussed actual legal cases and their implications for practice in class, Cannon suggested a similar pedagogy in a 1900 paper published in the Boston Medical and Surgical Journal. The article, entitled "Case Method of Teaching Systematic Medicine," suggested employing real case histories and hospital data in active classroom discussions instead of the "dreary and benumbing process" of passively listening to lectures and reading texts. The young instructor's new teaching technique was quickly adopted by several departments at the Harvard Medical School and even incorporated by a number of medical texts.

In his last year of medical school Cannon was already working as a zoology instructor at Harvard College, where he taught comparative vertebrate anatomy. After he graduated from medical school in 1900, professor William Townsend Porter encouraged Harvard President Charles W. Eliot (1834-1926, APS 1871) to make Cannon an instructor of physiology. The following year on June 25, 1901 he married a longtime friend Cornelia James, who would later become a best-selling author. In 1902 Cannon advanced to the rank of assistant professor, again with Porter's backing. In 1906, when Cornell Medical School tried to recruit him, President Eliot decided to have Cannon, whose teaching ability made him popular with students, succeed the retiring professor Bowditch as George Higginson Professor of Physiology and department chairman (rather than Porter). Porter was made Professor of comparative physiology. Altogether Cannon would spend four decades on the physiology faculty of the Harvard Medical School, retiring in 1942. His tenure at Harvard was interrupted only by service with the Army Medical Corps during the First World War, when he was stationed in France and England in 1917-1918.

Cannon's growing engagement in physiological research had political, as well as professional implications for him. Following strong antivivisectionist assaults on the new Rockefeller Institute for Medical Research and legislative attempts in New York and elsewhere to curb the use of animals in medical experiments, Cannon joined the struggle against antivivisection. In 1908, in response to these antivivisectionist initiatives, the American Medical Association created a special Defense Committee in Support of Medical Research. Because of his prominence as an experimental physiologist, the thirty-seven year old Cannon was asked to head the committee, placing him in the forefront of the struggle. In this position he would be the A.M.A.'s chief strategist for the next eighteen years. He firmly defended the rights of medical researchers, declaring that "the imagined horrors of medical research do not exist . . . . [Furthermore] that their critics are ignorant—ignorant of the conditions of medical research and ignorant of the complex relations of the medical sciences to medical and surgical practice and . . . that these critics in their ignorance are endeavoring to stop that experimental study of physiology and pathology." Cannon and his retired colleague Philadelphia surgeon William W. Keen (1837-1932, APS 1884) monitored antivivisectionist activity, mobilized the medical profession, lobbied politicians, testified in public hearings, and wrote tirelessly in defense of animal experimentation.

During the first World War, Cannon worked on the treatment of trauma and wound shock. Even before the entry of the United States into the war, in the fall of 1916 the National Research Council recruited him for its Committee on Traumatic Shock. Later he joined the Harvard University Hospital Unit, and on his way to France in May 1917 stopped in London to join the Medical Research Committee, a group of physicians and surgeons from the British Expeditionary Forces, treating shock cases at the Casualty Clearing State at Béthune. The following summer, after the Medical Research Committee formed a Shock Committee, Cannon was named a member. Later, he was appointed director of the surgical research laboratory of the American Expeditionary Forces's Central Medical Department. Although Cannon and his colleagues initially focused their efforts on treating the acidosis that accompanies shock, they soon realized that acidosis was simply a secondary occurrence, the result of inadequate tissue perfusion. Cannon later summarized the conclusions of his wartime experiences in his work on Traumatic Shock (1923).

In the years preceding and immediately following World War I, he devoted much energy to research into the sympathetic nervous system and functions of the suprarenal medulla, such as the secretion of the adrenaline during stress, the "fight or flight" mechanism. The studies he started with M.A. McIver and S.W. Bliss on the sympathetic and adrenal mechanism for mobilizing sugar in hypoglycemia caused by insulin (1923) might have provided the original context for his notion of homeostatis. He coined the term in a 1926 paper titled "Physiological Regulation of Normal States." Canon published an extensive analysis of the problem of homeostatis in 1929. The article, which appeared in Physiological Reviews, discussed the homeostatic regulation of water, sodium chloride balance, glucose, protein, fat and calcium, but also examined the part played by the autonomic nervous system in homeostatis and the homeostatic functions of hunger, thirst, and uniform temperature. Cannon popularized the concept of homeostatis in a 1932 book entitled the Wisdom of the Body.

Beginning in the 1930's Cannon and his colleagues Z.M. Bacq and Arturo Rosenbluth focused their research chemical transmission of nerve impulses. An early synthesis of their work was entitled Autonomic Neuro-Effective Systems (1937), that hypothesized the existence of two "sympathins," one excitatory and one inhibitory. Although it drew critical reviews, the work bore some resemblance to the research e carried out later by Nobel laureates Otto Loewi (1936) and Ulf von Euler (1970).

In addition to his strong commitments to medical education and scientific research, Cannon cherished the deep conviction that as a citizen, a scientist is obligated to defend freedom, which is indispensable for productive scholarship. His beliefs in the family of humankind and the universality of science led to his involvement with the American-Soviet Medical Society and the American Bureau for Medical Aid to China. He was also increasingly concerned about the growing threat that fascist and authoritarian governments posed to the scientific community. After meeting Spanish physiologist Juan Negrin (later premier of the Spanish Republic), Cannon began to follow political developments in Spain very closely. In 1937 he became chair of the Medical Bureau to Aid Spanish Democracy. He also developed a friendship with Russian physiologist Ivan Pavlov (1848-1936, APS 1932), who had similar research interests, but he also had a general (albeit not uncritical) interest in the Soviet Union and it support for science. In all of these international endeavors Cannon was motivated by two concerns: the advancement of science and humanitarian support for the weak and oppressed.

Cannon was active in a number of scholarly and professional organizations, including the American Medical Association, the American Association for the Advancement of Science, and the American Physiological Society. He was elected to the American Philosophical Society in 1908. In addition to his research articles and monographs, he was author of a several popular books that found a wide audience. These works included Bodily Changes in Pain, Hunger, Fear and Rage (1915) and The Wisdom of the Body (1932), and his autobiography, The Way of an Investigator: A Scientist's Experiences in Medical Research (1945).

Cannon retired from the Harvard Medical School in 1942. Although he was a visiting professor at the New York University Medical School in 1944 and did research with Arturo Rosenbluth in Mexico City in 1945, Cannon's health was failing. The ill health he had endured for decades and the cancerous condition he developed in later life are probably the result of his experiments with x-rays during the early days of his research. Cannon died in Franklin, New Hampshire on October 1, 1945. He was survived by his wife Cornelia, his son Bradford and daughter Marian.

Throughout his adult life, Cannon steadfastly maintained that science held the key to the betterment of the human condition, and that science was synonymous with "truth" and "knowledge". To Cannon, the sanctity of science should not be curtailed or tarnished by arbitrary limitations or falsehood. Scientists should be afforded maximum freedom in their research. In fact, it is the scientist's duty to maximize his freedom by educating the public and promoting a borderless ethic in scientific discourse. These convictions led Cannon to do battle with the antivivisection movement, to assist Jewish doctors from Nazi-controlled Europe, to bring medical relief to the Spanish Republic and to support the formation of scientific ties with the Soviet Union. Consequently, Cannon viewed his opposition to antivivsection as a fundamentally "moral" proposition. Convinced that animal experimentation was essential to medical progress, he considered antivivisectionists' efforts to throw roadblocks in the way of scientific progress as "immoral," and he fulminated over what he perceived as their use of distortions, fabrications, and mistatements, or their sheer, unadulterated ignorance.

Scope and content

A significant resource for study of the response of the American medical community to antivivsectionist agitation during the first quarter of the twentieth century, the Cannon Papers are essentially a long conversation between two of the leading anti-antivivisectionists in America, Walter B. Cannon and William W. Keen. In over 650 letters, mostly quite brief, written between 1905 and 1928, Cannon and Keen engage in a sustained dialogue on the best strategies for defending vivisection to a skeptical public and on the best method for organizing the medical community. The collection is arranged chronologically.

Although the dominant theme of the collection is vivisection, Keen and Cannon were active as physicians and medical educators, and their correspondence inevitably touches on other subjects. At various points, the two discuss surgery, neurology, tuberculosis, typhoid vaccination, the treatment of shock, and evolution, and a number of organizations and individuals are mentioned, including the American Philosophical Society, the Mayo Clinic, American Medical Association, University of Minnesota, the League of Nations, the University of Pennsylvania, Joseph Lister, Woodrow Wilson, William H. Taft, Edward W. Bok, and S. Weir Mitchell.

Collection Information

Provenance

Acquired, 1973.

Preferred citation

Cite as: Walter B. Cannon Papers, American Philosophical Society.

Processing information

Catalogued by Carmen Lee, 2000.

Related material

The College of Physicians of Philadelphia has an important collection of correspondence of W. W. Keen regarding vivisection.

The bulk of the papers of Walter B. Cannon are housed in the Rare Books Department of the Francis A. Countway Library of Medicine, Harvard Medical School.

Bibliography

Obituary of Walter B. Cannon, Journal of the American Medical Association 129 (Oct, 1945): 526.

Finsen, Lawrence and Susan Finsen, The Animal Rights Movement in America (New York, 1994).

Lederer, Susan, Subjected to Science: Human Experimentation in America Before the Second World War (Baltimore, 1995).

Physiology, Biochemistry, and Biophysics Note

AuthorFormatDateLanguage
Keen, William W. (William Williams), 1837-1932 (The correspondence between Keen (American Philosophical Society president 1908-1918) and Cannon, which makes up most of the Cannon Papers, deals almost exclusively with the anti-vivisection campaign and the legislative debate which it spawned. Although they do not address physiology research per se, the letters are a valuable source on aspects of the social and political context of experimental physiology and medicine.) Correspondence (Circa 575 items)1905-1928English

General note

It is never easy to pin down the moment that a "movement" was born and even harder to determine the point at which it expired. American antivivisectionism began to appear only in the aftermath of the fierce debate in the UK that culminated in the act to restrict animal experimentation of 1876. Taking their cue from their British counterparts, a small number of Americans began to voice opposition to animal experimentation, but due to the rarity of animal experimentation in this country before the last quarter of the 19th century, the movement was slow to coalesce.

The first antivivisection bill in America was introduced in New York in 1880, and although it was defeated in the legislature, antivivisectionist pressure was ratecheted up over the next twenty years. At both state and national levels, legislative proposals to regulate vivisection came very close to becoming law, and public opinion swung largely to the antivivisection cause. Devising ever more ingenious strategies, the opponents of animal research kept busy with lecture tours and traveling exhibitions, protests and mass meetings, legislative protests and attempts at stopping medical schools from obtaining pets kept in city pounds. By the outbreak of the First World War, however, the antivivisection movement had passed its peak, and by the end of the 1920s, it was no longer considered by defenders of vivisection to be a serious threat.

One of the keys to the success of the antivivisection movement during its heyday was the network of humane societies and animal protection organizations that provided a structure for airing their perspective. The first such organization in America was the American Society for the Prevention of Cruelty to Animals, founded in New York by Henry Bergh in 1866, which, like many SPCAs, was also concerned with child abuse and welfare. Bergh was one of the first -- if not the first -- to challenge animal experimenatation at a time when such practice took place very infrequently in America, and it was he who initiated an antivivisection education program at the ASPCA in 1874, and who instigated the antivivisection bill before the New York legislature in 1880.

These radical beginnings, however, soon faded, and although the humane societies remained opposed to human vivisection, by the turn of the century they shrank from opposing animal research. It has been argued that this was largely due to the humane movement's "overall conservatism" in that period and the fact that it "avoided challenging the assumptions that underlie institutionalized exploitation," including "institutional cruelties in farming, vivisection, and exploited wildlife" (Finsen and Finsen p. 51).

In any event, the onus of antivivsetion activity fell elsewhere. Caroline Earle White, who had helped to organize the Pennsylvania SPCA in 1867 and who had served as President of its Women's Branch for fifty years, formed the American Antivivisection Society in 1877 to coordinate the efforts of the various humane societies across the country and to provide support for regulating animal experimentation. Begun in Philadelphia, the Society was followed by similar groups in Boston (1895), Maryland (1898), Chicago (1903), and New York (1908). Like the humane societies, these groups sought to promote the general welfare of all animals, from transportation of animals, to bullfights and wearing animal fur and skin, but as the humane societies began to shy away from supporting the abolition of vivisection, the AAVS did not. As a result, these two communities took increasingly divergent paths, much to the detriment of the antivivisection movement.

Not surprisingly, the vast majority of those who challenged the antivivisectionists were members of the medical profession. Among their leaders were William Henry Welch, professor of pathology and dean of the Johns Hopkins Medical School, who led the fight against federal legislation to restrict animal experimentation in 1896 to 1901. His successor in anti-antivivisectionism was William Williams Keen, head of the Department of Physiology at Harvard Medical School, who presented testimony during the Senate hearings in 1900. In Philadelphia, in addition to Keen, the physiologist Richard Mills Pierce and his colleagues at the University of Pennsylvania were active in anti-antivivisectionism, and after the establishment of the Rockefeller Institute in 1904, they were joined by Henry James, jr., and Simon Flexner. In 1908, the AMA stepped in to help coordinate the response of the medical community, forming a Council for the Defence of Medical Research, of which Cannon was appointed head.

The most vocal defenders of vivisection often argued against all forms of outside interference in medical education and research. They opposed not only the abolition of the use of animals, but even its regulation, maintaining that any concession on their part would lead to dire consequences for medical science. However, just as the antivivisectionists were not uniformly in favor of total abolition, not all medical researchers were so extreme. There was even a small contingent of antivivisectionist physicians who, like Arthur Leffingwell, commanded a degree of "authority" in the medical community.

If one generality applies to the antivivisectionists, it was that they were predominately female. White, renowned as founder of the AAVS, and a brilliant lecturer, was perhaps the most prominent, but women were the backbone of the movement at the grassroots level as both leaders and participants. Women such as Mary F. Lovell and Diana Belais organized antivivisection societies, provided funding, wrote articles and edited the magazine Zoophilly, sought support from women's organizations, and lectured widely. The movement's leaders were generally drawn from families of good social standing, and many were active in other social reform movements (e.g. temperance movement).

Women shaped the movement from its ideological underpinnings to its rhetoric, strategy, and tactics. They stressed emotional elements such as compassion, affection, and caring for the young and defenseless, traits commonly regarded at the time as distinctly "feminine" and "maternal". They considered themselves responsible for setting children on the correct moral path, which included steering them away from cruelty to animals, and they took advantage of their association with women's groups to spread their antivivisection message.

The principal objection to animal experimentation among antivivisectionists was a moral and ethical one. They argued that it is fundamentally immoral to sacrifice sentient creatures to gain scientific knowledge, but more subtly, that claimed that vivisection decreased the moral sensibility of physicians, and by impairing their sense of compassion, would jeopardize public safety. Whether in the laboratory or slaughterhouse, they contended that cruelty to animals corrupted morality. Their ethical concern therefore extended to and included human subjects, especially orphans and hospital patients. Arguing that it was their particular duty to protect the young from exposure to the cruelty inherent in animal experimentation, they succeeded in securing legislation to prohibit vivisection in elementary and secondary schools.

Of all the proposals to regulate vivisection in the last decades of the 19th century and first quarter of the 20th century, the bils presented to Congress in 1896 and 1900 respectively presented the greatest challenge to the medical community. Representative James McMillan of Michigan introduced a bill in 1896 to regulate vivisection in the District of Columbia, modelled on the British act of 1876. After a public hearing, however, the vote was postponed due to the Spanish American War. A similar proposal was put forward in 1900 by Senator Jacob Gallinger from New Hampshire, who had conducted the Senate hearings in 1896. Antivivisectionists had hoped that by securing restriction at the federal level, it would be easier to bring about changes in local laws. Despite support from the public, academics, religious leaders, Supreme Court justices, and even a number of physicians, however, the bill languished due to intensive last minute political lobbying by Welch and other physicians.

The Gallinger bill served as a wake up call for the medical establishment. Even though the bill was defeated, the experience was sobering. Quick to learn their lesson, physicians realized the need to redouble their efforts to defend animal research, making full use of their political connections to push their agenda. Provivisection activists were quick to urge the Council for the Defence of Medical Research to be aggressive in the political sphere, as wellas they public sphere, and they closed ranks around their common cause. Even though Welch and Keen did not agree on everything, leading defenders of animal research always made sure to keep their disputes private and their community in excellent order.

Ultimately, the decline of the antivivisection movement can be traced to several causes beyond the effective response of the medical community. For quite some time it has been maintained that the discovery of diphtheria antitoxin and other major medical developments brought the antivivisectionists to their knees, and that the outbreak of war in 1914 altered moral priorities. Soldiers had to be vaccinated against typhoid and urgent questions about illnesses affecting the troops tempted medical researchers to turn increasingly to laboratory animals for answers. Antivivisection advocates uniformly opposed these activities, and as a result lost support among the general public. More generally, antivivisectionists were not helped by their tendency to misrepresentation and exaggeration, and their use of inaccurate, vague and outdated references. Although antivivisectionists continued to press for legislative changes into the 1920s, they were so thoroughly unsucessful that the many members of the medical community felt confident in declaring victory. Where Cannon had contributed twelve pieces against antivivisection between 1921 and 1926, he wrote only a single article on the subject in the 1930s.

Indexing Terms


Corporate Name(s)

  • American Medical Association
  • League of Nations.
  • University of Minnesota.
  • University of Pennsylvania.

Genre(s)

  • Scientific Correspondence

Personal Name(s)

  • Bok, Edward William, 1863-1930
  • Cannon, Walter B. (Walter Bradford), 1871-1945
  • Keen, William W. (William Williams)
  • Lister, Joseph, Baron, 1827-1912
  • Mitchell, S. Weir (Silas Weir), 1829-1914
  • Taft, William H. (William Howa
  • Wilson, Woodrow, 1856-1924

Subject(s)

  • Evolution
  • Medicine-United States
  • Neurology-United States
  • Science and technology
  • Shock.
  • Surgery-United States
  • Tuberculosis
  • Typhoid vaccine
  • Vivisection


Detailed Inventory

Walter B. Cannon Papers
1905-1928 box 1-6
Keen, William W. (William Williams).
to Walter B. Cannon
1905 May 11p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1905 May 31p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1908 December 42p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1908 December 82p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1908 December 91p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 March 101p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1909 March 111p.box 1
Paget, Stephen.
to William W. Keen
1909 April 132p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 June 222p.box 1
Dix, E. C..
to William W. Keen
1909 July 62p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 July 101p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1909 July 132p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1909 September 221p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 September 281p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 October 41p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 October 161p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 October 181p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1909 October 181p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 October 201p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 October 291p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1909 October 301p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 November 11p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 November 92p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 November 111p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1909 November 122p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 November 131p.box 1
Keen, William W. (William Williams).
to the editor of Zoophily
1909 November 132p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 November 181p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1909 November 191p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 December 102p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1909 December 131p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 December 201p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1909 December 211p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 December 221p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1909 December 231p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1909 December 301p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 January 32p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 January 41p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 January 71p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 January 71p.box 1

Not found: 2/18/2011

Other Descriptive Information: Unlocated 3/11

Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 January 101p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 January 171p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 January 222p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 January 243p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 January 272p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 January 282p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 January 311p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 February 111p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Feb 141p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Feb 191p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 Feb 212p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Feb 242p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 Feb 262p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Feb 282p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 Mar 12p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Mar 71p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 Mar 81p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Mar 112p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 Mar 122 copies, 4p. eachbox 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Mar 142p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Mar 161p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Mar 181p.box 1
Keen, William W. (William Williams).
to Charles E. Hughes
1910 Mar 182 copies, 3p.box 1

Includes Cannon to Charles E. Huighes, March 19, 1910, 2 copies, 6p. each

Keen, William W. (William Williams).
to Walter B. Cannon
1910 Mar 211p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 Mar 281p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Mar 291p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Apr 11p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 Apr 41p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Apr 51p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 Apr 61p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Apr 61p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Apr 72p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 Apr 71p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 Apr 151p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Apr 191p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 Apr 251p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 May 61p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 May 131p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 May 161p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 June 131p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 June 191p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 June 231p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 June 281p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 June 292p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1910 June 301p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Nov 31p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Nov 52p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Nov 262p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Nov 282p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1910 Dec 291p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 Jan 141p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1911 Feb 161p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1911 Feb 201p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1911 Feb 232p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 May 301p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 June 122p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 June 263p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 June 281p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1911 July 131p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1911 July 171p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1911 July 181p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 July 211p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 Sep 112p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 Oct 182p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 Oct 201p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1911 Oct 235p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 Oct 271p.box 1
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1911 Oct 311p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 Nov 131p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1911 Nov 222p.box 1
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Mar 71p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1912 Mar 81p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Mar 221p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1912 Mar 231p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Apr 101p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Aug 291p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Aug 291p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Sep 53p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Sep 101p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Sep 131p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Sep 132p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Sep 301p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Oct 121p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Oct 181p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Oct 221p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1912 Oct 231p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Nov 122p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Nov 211p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1912 Nov 221p.box 2
Simmons, G. H..
to Walter B. Cannon
1912 Nov 251p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1912 Nov 271p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Nov 301p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1912 Dec 242p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1913 Jan 51p.box 2
Pearce, R. M..
to Walter B. Cannon
1913 Jan 72p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1913 Jan 222p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1913 Jan 251p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to R. G. [i.e. R. M.] Pearce
1913 Nov 81p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to R. M. Pearce
1913 Nov 81p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1913 Nov 262p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to R. M. Pearce
1913 Dec 122p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to R. M. Pearce
1913 Dec 152p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1913 Dec 161p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to Stephen Paget
1913 Dec 171p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1913 Dec 182p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1913 Dec 181p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1913 Dec 201p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1913 Dec 231p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to R. M. Pearce
1913 Dec 262p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1913 Dec 311p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Jan 12p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to R. M. Pearce
1914 Jan 12p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Jan 31p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Jan 31p.box 2
Cabot, R. C..
to William W. Keen
1914 Jan 31p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Jan 71p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Jan 101p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Jan 101p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Jan 122p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Jan 121p.box 2

Includes newsclipping on vivisection; copies of letters from John Richardson to Joseph B. Cummins, September 25, 1913 (3p.) and William R. Bradshaw to Cummins, Oct. 19, 1913; and B. F. McGrath, "The 'Open door,' Mr. Bradshaw, and the Mayo Clinic," January 9, 1914.

Keen, William W. (William Williams).
to Walter B. Cannon
1914 Jan 131p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Jan 292p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Feb 21p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Feb 41p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Feb 71p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Feb 91p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Feb 101p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Feb 111p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Feb 111p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Feb 201p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Feb 201p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Feb 261p.box 2
Belais, Diana.
to William W. Keen
19141p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Feb 272p.box 2
Lee, Frederick S..
to Walter B. Cannon
1914 Feb 272p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Mar 21p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Mar 51p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Mar 173p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Mar 181p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Mar 191p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Mar 231p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Mar 251p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Mar 271p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Apr 11p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Apr 21p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 May 201p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 May 211p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 May 232p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 May 221p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 May 252p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 May 283p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 June 12p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 June 61p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 June 81p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 June 91p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 June 111p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 July 161p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Aug 101p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Aug 152p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Aug 201p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Aug 311p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Sep 32p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Sep 42p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Sep 51p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Sep 161p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Sept 181p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Sep 231p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Sep 232p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Sep 252p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Nov 21p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1914 Nov 31p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Nov 51p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1914 Nov 201p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Jan 81p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
19152p.box 2

Other Descriptive Information: Unlocated 3/11

Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 Jan 92p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Jan 111p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 Jan 201p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Jan 251p.box 2
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Jan 261p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 Jan 271p.box 2
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 Mar 51p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Mar 61p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Mar 101p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 Mar 161p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 Mar 221p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Mar 261p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 Mar 272p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Mar 291p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 Mar 311p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Apr 11p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 Apr 51p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Apr 71p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Apr 141p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 Apr 151p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Apr 161p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 Apr 191p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 Apr 241p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 May 51p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 May 61p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 May 131p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 May 151p.box 3
Keen, William W. (William Williams).
to H.R. Hadwen
1915 May 175p.box 3
Keen, William W. (William Williams).
to Dr. Vaughan
1915 May 171p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 May 171p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 May 191p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 May 191p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 May 201p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 May 201p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 May 211p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 May 212p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 May 241p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 June 91p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1915 June 101p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1915 July 41p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to Editors of Zoophily
1916 July 112p.box 3
Logan, R. R..
to Walter B. Cannon
1916 July 121p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to R. R. Logan
1916 July 142p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1916 July 181p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1916 July 182p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1916 July 263p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1916 July 281p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1916 July 301p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1916 Aug 61p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1916 Sep 281p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1916 Sep 292p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1916 Pct 32p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1916 Oct 41p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1917 Feb 101p.box 3
Lyon, E. P..
to Walter B. Cannon
1917 Mar 271p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to E. P. Lyon
1917 Apr 35p.box 3

Includes Cannon to Lyon, April 2, 1917.

Keen, William W. (William Williams).
to Walter B. Cannon
1917 Apr 211p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1917 Apr 232p.box 3
Keen, William W. (William Williams).
to Harvey Cushing
1917 Apr 292p.box 3
Lambert, Alexander.
to Walter B. Cannon
1917 Nov 231p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1918 Dec 62p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1918 Dec 233p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Jan 71p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Jan 71p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Jan 151p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 Feb 12p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Feb 42p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to Red Cross
1919 Feb 41p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 Feb 52p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Feb 52p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to S. J. Meltzer
1919 Feb 52p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 Feb 62p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Feb 72p.box 3
Meltzer, S. J..
to Walter B. Cannon
1919 Feb 72p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to S. J. Meltzer
1919 Feb 112p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to J. J. R. MacLeod
1919 Feb 131p.box 3
Howell, W. H..
to Walter B. Cannon
1919 Feb 141p.box 3
Lambert, Alexander.
to Walter B. Cannon
1919 Feb 161p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Feb 172p.box 3
MacLeod, J. J. R..
to Walter B. Cannon
1919 Feb 182p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to J. J. R. MacLeod
1919 Feb 211p.box 3
Howell, W. H..
to Walter B. Cannon
1919 Feb 211p.box 3
Lambert, Alexander.
to Walter B. Cannon
1919 Feb 251p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to Alexander Lambert
1919 Mar 41p.box 3
Meltzer, S. J..
to Walter B. Cannon
1919 Mar 81p.box 3
Lambert, Alexander.
to Walter B. Cannon
1919 Mar 131p.box 3
Lambert, Alexander.
to Walter B. Cannon
1919 Mar 161p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 Mar 171p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Mar 191p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to Alexander Lambert
1919 Mar 201p.box 3
Lambert, Alexander.
to Walter B. Cannon
1919 Mar 201p.box 3
Lambert, Alexander.
to Walter B. Cannon
1919 Mar 211p.box 3
Mendel, Lafayette B. (Lafayette Benedict), 1872-1935.
to Walter B. Cannon
1919 Mar 211p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to Alexander Lambert
1919 Mar 221p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to J. J. R. MacLeod
1919 Mar 222p.box 3
MacLeod, J. J. R..
to Walter B. Cannon
1919 Mar 262p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to J. J. R. MacLeod
1919 Mar 281p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to Alexander Lambert
1919 Mar 281p.box 3
Hussey, R. G..
to Walter B. Cannon
1919 Mar 292p.box 3
Hoell, W. H..
to Walter B. Cannon
1919 May 42p.box 3
Keen, William W. (William Williams).
to Authors of Kenn's Surgery, vol. VII
1919 May 132p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 June 101p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 June 212p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 June 211p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 July 122p.box 3
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 July 141p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 July 161p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 July 252p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 July 293p.box 3
Keen, William W. (William Williams).
to Authors of Kenn's Surgery, vol. VII
1919 July 301p.box 3
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Aug 52p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Aug 81p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Aug 111p.box 4
Keen, William W. (William Williams).
to Authors of Kenn's Surgery, vol. VII
1919 Sep 51p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Sep 121p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Sep 223p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Sep 231p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 Sep 262p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Sep 261p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Sep 271p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 Sep 301p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Oct 11p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 Oct 22p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Oct 21p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Oct 41p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Oct 111p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 Nov 31p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Nov 41p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 Nov 172p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Nov 191p.box 4
Saunders, W. B..
to Walter B. Cannon
1919 Nov 251p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 Dec 11p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1919 Dec 31p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1919 Dec 51p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to Frank B. Kellogg
1919 Dec 82p.box 4
Kellogg, Frank B..
to Walter B. Cannon
1919 Dec 101p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Jan 111p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Jan 141p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Jan 161p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Jan 171p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Jan 191p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Jan 202p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Jan 222p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Jan 241p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Jan 201p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Feb 31p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Feb 71p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Feb 241p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Mar 221p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Mar 242p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Apr 21p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Apr 21p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Apr 61p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Apr 71p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Apr 91p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Apr 142p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Apr 161p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 May 81p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 May 102p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 May 112p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 May 121p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 May 131p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 May 141p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 May 172p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 May 241p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 May 261p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 May 281p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 June 11p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 June 21p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 June 22p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 June 41p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 June 52p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 June 71p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 June 151p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Oct 61p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Oct 72p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Oct 82p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Oct 91p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Oct 112p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Oct 131p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Oct 141p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Oct 161p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Oct 201p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Oct 211p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Oct 241p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Oct 251p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Oct 261p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Oct 282p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Nov 12p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Nov 21p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Nov 41p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Nov 52p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Nov 62p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Nov 81p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Nov 92p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Nov 132p.box 4
Keen, William W. (William Williams).
to Simon Flexner
1920 Nov 132p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Nov 152p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Nov 161p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Nov 162p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Nov 172p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Nov 172p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Nov 182p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Nov 182p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Nov 201p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Nov 201p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Nov 271p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Nov 292p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Dec 11p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Dec 22p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Dec 32p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Dec 41p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Dec 62p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Dec 71p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to K. K. Koessler
1920 Dec 81p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Dec 91p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Dec 162p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Dec 171p.box 4
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Dec 181p.box 4
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Dec 201p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Dec 211p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Dec 221p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Dec 242p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Dec 251p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Dec 262p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Dec 271p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1920 Dec 282p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1920 Dec 301p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Jan 141p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Jan 301p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Jan 311p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 Feb 31p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Feb 71p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 Feb 91p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Feb 131p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 Feb 141p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921, Feb 152p
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Feb 162p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Feb 171p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 Feb 182p.box 5
Keen, William W. (William Williams).
to Nellie C. Williams
1921 Feb 241p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Feb 251p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Feb 261p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Mar 51p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 Mar 71p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Mar 91p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 Mar 141p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Mar 171p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 Mar 191p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Apr 121p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Apr 131p.box 5

Includes Cannon to Keen, n.d.

Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 May 122p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 May 131p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 May 162p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 May 171p.box 5
Keen, William W. (William Williams).
"Death and Cremation: Some Personal Experiences of One of Your Colleagues" Trans. of the American Surgical Association
19213p.box 5
"W. W. Keen," Farm Journal
1921 June4p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 July 62p.box 5
Cannon, Walter B. (Walter Bradford), 1871-1945.
to William W. Keen
1921 July 82p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Aug 22p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Aug 5 

See 1921 Aug 23 folder

Keen, William W. (William Williams).
to Walter B. Cannon
1921 Aug 62p.box 5
Keen, William W. (William Williams).
to Walter B. Cannon
1921 Aug 82p.box 5