Davenport employed a host of different types of notebooks to record entries. Those include: Standard Diary, A Line a Day, Red Star Diary, Nassau Diary, Loesen Engagement Book, Daily Reminder, Vaughan's, New Census, Marquette, and various loosely bound notebooks. While he records weather conditions (often with temperatures), meetings, and accounts throughout those records, his earliest accounts proffer his most personal and narrative entries.
 
Between 1878-84, Davenport writes regularly about his religious upbringing, studies, work at the Polytechnic Institute, and political observations. Religion features prominently in Davenport's youth: In addition to regularly attending church and Sunday School, he records notes and thoughts about particular readings and sermons (consider for example 1/6/1878, 1/29/1882, and 2/16/1882). In a 1/22/1882 entry, he even notes the visit of a Mormon woman from Utah, which he later marks as a "principal personal event."
 
Alongside notes about subjects related to studies, Davenport records household chores (7/16/1881), recreational activities (walks, rides, croquet), trips (e.g. a summer visit to the New Hampshire White Mountains in 1884), cultural excursions (the American Museum of Natural History on 1/6/1879), personal readings (1/3/1881), and some of the first evidence of his interest in surveying (illustrations of a chapel hall, 1/2/1880). The young Davenport also demonstrated an unusual curiosity in current affairs and politics. For example, his first journal includes an enthusiastic account of election day (11/5-11/6/1878), and his 1881 diary features several entries dedicated to assassination of President James Garfield and ascension of Chester A. Arthur (9/26-9/30/1881). These early diaries are also some of Davenport's most playful: he self-consciously reflects on diary-writing (2/6-2/7/1878, 1878 memoranda, 1880 front matter, and 9/6/1880) and intersperses doodles to commemorate holidays (12/311878 and 2/22/1879, 5/30/1879, 6/1/1879).
 
Subsequent diaries are less narrative in nature, but illuminating their own right. Davenport maintains notebooks on subject area interests, including a journal entitled "Ornithology 1885" which includes migration charts from the American Ornithologists' Union," notebooks dedicated to topology, mineralogy, budding and regeneration, and research on the human brain (1885-1892), and various notebooks dedicated to the study of human inheritance. As Davenport's career begins to take off around the fin de siecle, he includes more notes related to lectures, seminars, student meetings, dinners, and lab work. His marriage to Gertrude Crotty surfaces in the five-year diary spanning 1899-1905 via birthday reminders (2/28/1899), city outings (9/11/1900), and notes related to their child, Janet (1/2/1899).
 
Researchers will find that Davenport's early-twentieth century diaries provide insights into his burgeoning career in genetics. In addition to notebooks pertaining to expeditions to the Biloxi, Mississippi (March 1901), Europe (September-October 1902 and 1909-10), and Mt. Washington (August 1908), a 1903 notebook features notes on "Topics of Inheritance" and allusions to work on a laboratory—almost certainly his Carnegie-funded lab in Cold Spring Harbor. Nevertheless, many of his entries could easily be confused with those of a farmer: Davenport records notes to purchase chicken feed, coal, grain, and rat poison, and a 1909-10 diary features numerous and meticulous illustrations of fish (October 1909 – March 1910). Concurrently, Davenport notes numerous meetings with leaders in genetics, botany, and zoology, including George Harrison Shull, Herbert Spencer Jennings, Edward Bagnall Poulton, Albert Francis Blakeslee, and Edmund Beecher Wilson. Perhaps most significantly, beginning around 1911, Davenport starts to reference Mary Harriman, who would later fund his work in eugenics.
 
Eugenics surface most directly in Davenport's diaries maintained throughout the 1910s and 1920s. Alongside regular visits to the "Harriman House," Davenport notes the opening of his laboratory ("Bio Lab Opens," 6/26/1912) and his increasing commitments to the field of eugenics. That includes notes on "Dwarfs of Lamar Lamar" (11/14/1911), reminders of "families to study (e.g. "chemists," "artists," "statesmen," "vocalists," and "naval" in his 1913 memoranda), and an account of "negative" and "positive eugenics" (January 1920). One notebook (dated "February 12") is less a diary than a set of eugenics lecture notes, including a "Field worker's guide" that describes the consequences of segregation, limitations of the law of heredity, and pages allocated for recording hair color, skin color, stature, mental activity, feeble-mindedness (e.g. pauperism, crime, insanity, criminality).
 
Between 1914-1930, Davenport makes numerous trips to Europe to study eugenics (including (1914, 1922, and 1929). His 1914 trip is explicitly labeled "Eugenics in Holland" (10/22). A series of loose, typed pages entitled "Diary of Trip to Europe, September 13 to October 31, 1922," includes notes on a lecture entitled "Das Mutations Problem" in Vienna (9/25) and his participation in the Second Commission of Eugenics through which he "Voted to admit Germany and all other, properly qualified countries to the Commission" (10/9). Perhaps most remarkably, at the end of that trip, Davenport records a meeting with Charles Darwin's son, Leonard: "At Lewes was met by Darwin and taken to his home in Sussex. Private conference on eugenical matters" (10/20).
 
That engagement carries home, where, in a 1930 diary, he includes a series of relevant newspaper clippings: "Racial related to a Racial Integrity Bill Signed" in Richmond, Virginia (3/14), "Extols African Marriage" (3/4), "Senate Refuses to Shelve Harris Quota Bill: Senate Again Rejects Motion by Glass aimed at Salvaging National origins Clause" (4/24), and "Dr. Adler Closes Psychology Clinic: Noted Viennese Scientist Declared Target of Medical Center Critics" (5/31). In some loose pages associated with that diary, Davenport compares a colleague (simply identified as "Gordon") to the Croatian-American geneticist Milislav Demerec: While Davenport finds Gordon "industrious and fertile in ideas," he adds that he is "not so brilliant as Demerec" (6/3).
 
Davenport's remaining diaries (1931-1944) mostly focus on various trips, with occasional mentions of the outbreak of World War II. The early-1930s feature a series of notebooks dedicated to travel in the Americas, including a "Western Trip" and "Trip to the West by Automobile" (which collectively span July-October 1931), as well as trips to Bermuda, Mexico, and Nova Scotia. The Nova Scotia trip is noteworthy because Davenport explicitly notes an encounter with Russian-American geneticist Theodosius Dobzhansky. In his late-1930s journals, World War II surfaces, if only briefly. In a diary spanning 1937-39, Davenport notes Germany's seizure of Poland (9/1/1939) and Great Britain's subsequent declaration of war (9/3/1939). Curiously, he also alludes to a "Cox: Atomic Nuclear" in multiple entries of June and July in his 1940 diary.
 
Finally, the Davenport diaries are noteworthy for their idiosyncrasies: these include at least one volume authored by his wife, and the eclectic range of ephemera include inside and alongside the diaries. In a volume signed "G.L. Davenport"—and bearing numerous allusions to "Charles and Charlie throughout—Gertrude Davenport records a series of entries between 4/1/1905 to 3/16/1913. Of particular interest is her protest of race track gambling (4/19/1908 and 4/23/1908) and the dedication to Carnegie Lab, with a note of an encounter with Andrew Carnegie, who "disappointed the department by not adding to the endowment" (1/3/1910). Alongside accounts of various farm and house work (mending garments, cleaning, and, unusual for a homemaker, making concrete blocks), this diary also notes Gertrude's reading, namely Harper's Monthly and the Century.
 
Across the series 95 diaries, Davenport includes a host of rich and sometimes peculiar ephemera: a letter, dated March 20, 1901 enclosed in an 1889 notebook, an image of Robert E. Lee (7/13/1905), a doodle of a family crest (3/17/1910), pamphlets related to ornithology (1920) and major snowstorm (2/2/1930), membership cards for the Arts Center of New York (1925) and the American Museum of Natural History (1943), Davenport's 1922 and 1925 passports, programs for a meeting of the Eugenics Research Association (6/3/1930) and a symposium on "Theory and Development" at Davenport's home (3/21/1930), train tickets to Washington (9/5/1918 and 7/9/1919), the ferry service between Staten Island and Brooklyn (5/3/1925), and the Long Island Railroad schedule (1927), receipts, deposit slips, and scraps of paper labeled everything from "OBESITY" (8/19/1915) to "Committee on Ways and Means" (1917), and even wooden toothpicks, which Davenport appeared to have used as bookmarks (9/5/1918, 10/31/1918, 3/12/1933, and 5/7/1933).
 
Although Davenport rarely uses his diaries for reflection, his enclosure of ancillary materials reveals his personal networks and popular reading. Throughout the diaries, scholars will discover business and calling cards for William Cohill (1902), Edith Reeves (1911), "Brinkerhoff" (1911), Sidney Ball (1914), "Antipodes" (1914), George Laible (1915), H. Lundborg (1923), Charles Herrman (1925), E.J. Lidbetter (1927), Gebruder Dippe (1930), H.J. Parsen (1933), and Ji-Yen Rikamaru (1937). Davenport also regularly encloses snippets from newspapers, including a piece Russian mogul named M. Rachatnikoff who sought "the improvement of the human race" (12/9/1906), Mary Harriman's purchase of land and sheep (9/25/1911), op-eds on immigration policy (9/9/1915) and access to birth control (1920), an obituary for Dwight Comstock (9/16/1932), and reports of Nassau County budget cuts (11/9/1942).

The Charles Benedict Davenport Papers include 95 diaries—and numerous ancillary materials—spanning 66 years (1878-1944). In fact, the collection traverses Davenport's formative years and adult life, beginning with student notebooks that he maintained at the age of 12 to a five-year diary that culminates with an entry recorded less than two weeks before his death (dated 2/5/1944). Davenport's diaries contain a wealth of material valuable to researchers investigating his personal life, scientific research—especially the field of Eugenics—religion (Congregationalism), politics, and World War II. At least one diary, which spans 4/1/1905 to 3/16/1913, appears to have been maintained by his wife, Gertrude.
 
Davenport employed a host of different types of notebooks to record entries. Those include: Standard Diary, A Line a Day, Red Star Diary, Nassau Diary, Loesen Engagement Book, Daily Reminder, Vaughan's, New Census, Marquette, and various loosely bound notebooks. While he records weather conditions (often with temperatures), meetings, and accounts throughout those records, his earliest accounts proffer his most personal and narrative entries.
 
Between 1878-84, Davenport writes regularly about his religious upbringing, studies, work at the Polytechnic Institute, and political observations. Religion features prominently in Davenport's youth: In addition to regularly attending church and Sunday School, he records notes and thoughts about particular readings and sermons (consider for example 1/6/1878, 1/29/1882, and 2/16/1882). In a 1/22/1882 entry, he even notes the visit of a Mormon woman from Utah, which he later marks as a "principal personal event."
 
Alongside notes about subjects related to studies, Davenport records household chores (7/16/1881), recreational activities (walks, rides, croquet), trips (e.g. a summer visit to the New Hampshire White Mountains in 1884), cultural excursions (the American Museum of Natural History on 1/6/1879), personal readings (1/3/1881), and some of the first evidence of his interest in surveying (illustrations of a chapel hall, 1/2/1880). The young Davenport also demonstrated an unusual curiosity in current affairs and politics. For example, his first journal includes an enthusiastic account of election day (11/5-11/6/1878), and his 1881 diary features several entries dedicated to assassination of President James Garfield and ascension of Chester A. Arthur (9/26-9/30/1881). These early diaries are also some of Davenport's most playful: he self-consciously reflects on diary-writing (2/6-2/7/1878, 1878 memoranda, 1880 front matter, and 9/6/1880) and intersperses doodles to commemorate holidays (12/311878 and 2/22/1879, 5/30/1879, 6/1/1879).
 
Subsequent diaries are less narrative in nature, but illuminating their own right. Davenport maintains notebooks on subject area interests, including a journal entitled "Ornithology 1885" which includes migration charts from the American Ornithologists' Union," notebooks dedicated to topology, mineralogy, budding and regeneration, and research on the human brain (1885-1892), and various notebooks dedicated to the study of human inheritance. As Davenport's career begins to take off around the fin de siecle, he includes more notes related to lectures, seminars, student meetings, dinners, and lab work. His marriage to Gertrude Crotty surfaces in the five-year diary spanning 1899-1905 via birthday reminders (2/28/1899), city outings (9/11/1900), and notes related to their child, Janet (1/2/1899).
 
Researchers will find that Davenport's early-twentieth century diaries provide insights into his burgeoning career in genetics. In addition to notebooks pertaining to expeditions to the Biloxi, Mississippi (March 1901), Europe (September-October 1902 and 1909-10), and Mt. Washington (August 1908), a 1903 notebook features notes on "Topics of Inheritance" and allusions to work on a laboratory—almost certainly his Carnegie-funded lab in Cold Spring Harbor. Nevertheless, many of his entries could easily be confused with those of a farmer: Davenport records notes to purchase chicken feed, coal, grain, and rat poison, and a 1909-10 diary features numerous and meticulous illustrations of fish (October 1909 – March 1910). Concurrently, Davenport notes numerous meetings with leaders in genetics, botany, and zoology, including George Harrison Shull, Herbert Spencer Jennings, Edward Bagnall Poulton, Albert Francis Blakeslee, and Edmund Beecher Wilson. Perhaps most significantly, beginning around 1911, Davenport starts to reference Mary Harriman, who would later fund his work in eugenics.
 
Eugenics surface most directly in Davenport's diaries maintained throughout the 1910s and 1920s. Alongside regular visits to the "Harriman House," Davenport notes the opening of his laboratory ("Bio Lab Opens," 6/26/1912) and his increasing commitments to the field of eugenics. That includes notes on "Dwarfs of Lamar Lamar" (11/14/1911), reminders of "families to study (e.g. "chemists," "artists," "statesmen," "vocalists," and "naval" in his 1913 memoranda), and an account of "negative" and "positive eugenics" (January 1920). One notebook (dated "February 12") is less a diary than a set of eugenics lecture notes, including a "Field worker's guide" that describes the consequences of segregation, limitations of the law of heredity, and pages allocated for recording hair color, skin color, stature, mental activity, feeble-mindedness (e.g. pauperism, crime, insanity, criminality).
 
Between 1914-1930, Davenport makes numerous trips to Europe to study eugenics (including (1914, 1922, and 1929). His 1914 trip is explicitly labeled "Eugenics in Holland" (10/22). A series of loose, typed pages entitled "Diary of Trip to Europe, September 13 to October 31, 1922," includes notes on a lecture entitled "Das Mutations Problem" in Vienna (9/25) and his participation in the Second Commission of Eugenics through which he "Voted to admit Germany and all other, properly qualified countries to the Commission" (10/9). Perhaps most remarkably, at the end of that trip, Davenport records a meeting with Charles Darwin's son, Leonard: "At Lewes was met by Darwin and taken to his home in Sussex. Private conference on eugenical matters" (10/20).
 
That engagement carries home, where, in a 1930 diary, he includes a series of relevant newspaper clippings: "Racial related to a Racial Integrity Bill Signed" in Richmond, Virginia (3/14), "Extols African Marriage" (3/4), "Senate Refuses to Shelve Harris Quota Bill: Senate Again Rejects Motion by Glass aimed at Salvaging National origins Clause" (4/24), and "Dr. Adler Closes Psychology Clinic: Noted Viennese Scientist Declared Target of Medical Center Critics" (5/31). In some loose pages associated with that diary, Davenport compares a colleague (simply identified as "Gordon") to the Croatian-American geneticist Milislav Demerec: While Davenport finds Gordon "industrious and fertile in ideas," he adds that he is "not so brilliant as Demerec" (6/3).
 
Davenport's remaining diaries (1931-1944) mostly focus on various trips, with occasional mentions of the outbreak of World War II. The early-1930s feature a series of notebooks dedicated to travel in the Americas, including a "Western Trip" and "Trip to the West by Automobile" (which collectively span July-October 1931), as well as trips to Bermuda, Mexico, and Nova Scotia. The Nova Scotia trip is noteworthy because Davenport explicitly notes an encounter with Russian-American geneticist Theodosius Dobzhansky. In his late-1930s journals, World War II surfaces, if only briefly. In a diary spanning 1937-39, Davenport notes Germany's seizure of Poland (9/1/1939) and Great Britain's subsequent declaration of war (9/3/1939). Curiously, he also alludes to a "Cox: Atomic Nuclear" in multiple entries of June and July in his 1940 diary.
 
Finally, the Davenport diaries are noteworthy for their idiosyncrasies: these include at least one volume authored by his wife, and the eclectic range of ephemera include inside and alongside the diaries. In a volume signed "G.L. Davenport"—and bearing numerous allusions to "Charles and Charlie throughout—Gertrude Davenport records a series of entries between 4/1/1905 to 3/16/1913. Of particular interest is her protest of race track gambling (4/19/1908 and 4/23/1908) and the dedication to Carnegie Lab, with a note of an encounter with Andrew Carnegie, who "disappointed the department by not adding to the endowment" (1/3/1910). Alongside accounts of various farm and house work (mending garments, cleaning, and, unusual for a homemaker, making concrete blocks), this diary also notes Gertrude's reading, namely Harper's Monthly and the Century.
 
Across the series 95 diaries, Davenport includes a host of rich and sometimes peculiar ephemera: a letter, dated March 20, 1901 enclosed in an 1889 notebook, an image of Robert E. Lee (7/13/1905), a doodle of a family crest (3/17/1910), pamphlets related to ornithology (1920) and major snowstorm (2/2/1930), membership cards for the Arts Center of New York (1925) and the American Museum of Natural History (1943), Davenport's 1922 and 1925 passports, programs for a meeting of the Eugenics Research Association (6/3/1930) and a symposium on "Theory and Development" at Davenport's home (3/21/1930), train tickets to Washington (9/5/1918 and 7/9/1919), the ferry service between Staten Island and Brooklyn (5/3/1925), and the Long Island Railroad schedule (1927), receipts, deposit slips, and scraps of paper labeled everything from "OBESITY" (8/19/1915) to "Committee on Ways and Means" (1917), and even wooden toothpicks, which Davenport appeared to have used as bookmarks (9/5/1918, 10/31/1918, 3/12/1933, and 5/7/1933).
 
Although Davenport rarely uses his diaries for reflection, his enclosure of ancillary materials reveals his personal networks and popular reading. Throughout the diaries, scholars will discover business and calling cards for William Cohill (1902), Edith Reeves (1911), "Brinkerhoff" (1911), Sidney Ball (1914), "Antipodes" (1914), George Laible (1915), H. Lundborg (1923), Charles Herrman (1925), E.J. Lidbetter (1927), Gebruder Dippe (1930), H.J. Parsen (1933), and Ji-Yen Rikamaru (1937). Davenport also regularly encloses snippets from newspapers, including a piece Russian mogul named M. Rachatnikoff who sought "the improvement of the human race" (12/9/1906), Mary Harriman's purchase of land and sheep (9/25/1911), op-eds on immigration policy (9/9/1915) and access to birth control (1920), an obituary for Dwight Comstock (9/16/1932), and reports of Nassau County budget cuts (11/9/1942).

Morley's early diaries provide intimate accounts of personal affairs, including his romantic relationships and education at Harvard University. In addition to documenting his budding relationship with Alice Williams, whom he would marry in 1908 and divorce in 1914, Morley writes at length about the planning of his first field trip to the Yucatan (1906-07). During that trip, he provides rich accounts of Havana (2/4/1907), Uxmal (2/15/1907), and his first excavation (8/19/1907).
 
Starting in 1912, his diary takes on a closer resemblance to a field notebook, with detailed accounts of his excavations in Belize, Guatemala, Honduras, El Salvador, and Mexico. Interspersed in those records are fascinating accounts of the World War I and World War II, including oblique references to Morley's espionage work. For example, on January 9, 1914 he writes of a "curious telegram warning" from Washington: "'Make no affiliations in the C.matter. This is a danger signal. Await further advices.' I cannot imagine what this can mean. Is it a warning against H.? I sent the following reply: 'Have made no affiliations whatever. Will make none. Will preserve absolute secrecy and keep free from all entanglements. My case is in your hands. Am awaiting further instructions.' Think I will hear by Monday."
 
As the war unfolded, Morley recorded its effects in both Central and South America, including President Woodrow Wilson's "destructive" policy in Mexico (2/13/1914), the geopolitical scramble for Guatemala, and the "key-stone of the arch between the Rio Grande and the canal" (12/8/1917). Later, at the outset of World War II, Morley notes Japanese encroachment on the Dutch East Indies (2/19/1941), and even the attack on Pearl Harbor, "a series of shots that literally were heard around the world" (12/29/1941).
 
In fact, war proves disruptive for Morley's work. A colleague, Dr. Moise La Fleur, is killed during a Mexican chicleros attack (5/17-19/1916), an incident from which Morley does not soon recover. Moreover his excavation of Chichen Itza is badly delayed until 4/28/1924.
 
Nevertheless, researchers interested in both the history of South America and the field of archaeology will be rewarded with meticulous descriptions of excavations conducted between the 1920s-1940s.

The 39 volumes of Sylvanus ("Vay") Griswold Morley diaries span 42 years of the first-half of the twentieth century, and provide textured accounts of Morley's personal affairs, archaeological expeditions in Central and South America, and developments of World War I and II in South America. Morley began keeping a journal while he was in school (1905) and continued maintaining it until 1946, a year before his death the year before his death (1947). Notably, all entries are typed, enabling researchers to quickly scan volumes for specific interests.
 
Morley's early diaries provide intimate accounts of personal affairs, including his romantic relationships and education at Harvard University. In addition to documenting his budding relationship with Alice Williams, whom he would marry in 1908 and divorce in 1914, Morley writes at length about the planning of his first field trip to the Yucatan (1906-07). During that trip, he provides rich accounts of Havana (2/4/1907), Uxmal (2/15/1907), and his first excavation (8/19/1907).
 
Starting in 1912, his diary takes on a closer resemblance to a field notebook, with detailed accounts of his excavations in Belize, Guatemala, Honduras, El Salvador, and Mexico. Interspersed in those records are fascinating accounts of the World War I and World War II, including oblique references to Morley's espionage work. For example, on January 9, 1914 he writes of a "curious telegram warning" from Washington: "'Make no affiliations in the C.matter. This is a danger signal. Await further advices.' I cannot imagine what this can mean. Is it a warning against H.? I sent the following reply: 'Have made no affiliations whatever. Will make none. Will preserve absolute secrecy and keep free from all entanglements. My case is in your hands. Am awaiting further instructions.' Think I will hear by Monday."
 
As the war unfolded, Morley recorded its effects in both Central and South America, including President Woodrow Wilson's "destructive" policy in Mexico (2/13/1914), the geopolitical scramble for Guatemala, and the "key-stone of the arch between the Rio Grande and the canal" (12/8/1917). Later, at the outset of World War II, Morley notes Japanese encroachment on the Dutch East Indies (2/19/1941), and even the attack on Pearl Harbor, "a series of shots that literally were heard around the world" (12/29/1941).
 
In fact, war proves disruptive for Morley's work. A colleague, Dr. Moise La Fleur, is killed during a Mexican chicleros attack (5/17-19/1916), an incident from which Morley does not soon recover. Moreover his excavation of Chichen Itza is badly delayed until 4/28/1924.
 
Nevertheless, researchers interested in both the history of South America and the field of archaeology will be rewarded with meticulous descriptions of excavations conducted between the 1920s-1940s.

The John Slater Papers include abstracts from his diaries, available as loose, mostly typed pages, which traverse his consequential career in physics (1900-1975). These abstracts trace Slater's doctoral study at Harvard (1923) and postgraduate work at Cambridge University, appointment at MIT (1930), work at the Laboratory for Nuclear Science during World War II, and late-career at the University of Florida (after his retirement from MIT in 1966). His diaries contain notes about a trip to Japan (including Hiroshima and Nagasaki) in the fall 1953, meetings with defense contractors (such as Lockheed Martin) throughout the 1950s and 1960s, a sighting of Sputnik (7/20/1958), notes about an "NSF proposal for computing center" (4/30/1965), associations with and publications of APS members (7/7/1951, 7/7/1972), and Slater's own personal affairs, as excerpted in Selected Quotations. As such, these abstracts may interest scholars researching John Clark Slater's career in the field of physics, biochemistry, atomic history, and the history of science more broadly, as well as those considering World War II and military contractors in the Cold War period, the space race, the history of computing, and the institutional history of the American Philosophical Society.; To supplement these diary abstracts, researchers might choose to expand their exploration of the Slater Papers, which also contain 133 research notebooks (1944-1976), a lengthy series of folders, containing lectures, scientific notes, drafts of manuscripts and papers, correspondence from his collaboration with the Los Alamos Labs (1966-1970), and correspondence relating to the National Academy of Science.