Interested researchers would do well to consult the detailed description of Hunter's four volumes available in the Early American History Note. For the purposes of diary researchers, the first volume (1796) warrants attention for its descriptions of indigenous peoples and early settlements. For example, Hunter offers an extended account of St. Louis (9/4/1796). He also describes an Indian woman whose nose was cut off by her husband for infidelity, a passage excerpted in Selected Quotations (9/9/1796). The 1802 journal documents Hunter's trip across Pennsylvania (Berlin, Carlisle, and Shippensburg), visit to a cave in Kentucky, and discussion of salt production at Blue Lick. Finally, the last two journals (1804, 1809) include various travels in the South, including a description of expedition to the Hot Springs of Arkansas (1804-1805) as well as longitudes and latitudes that researchers might use to trace Hunter's journey. Notably, Hunter discovers Mammoth bones, which he compares to those of Charles Wilson Peale, writing, "I cannot for bear mentioning a great natural curiosity I have just seen here [sic] about 2 ½ Tons of Bones of one or two Mammoths twice as large as Peals" (5/27/1804).

George Hunter maintained four journals during expeditions into Kentucky, Illinois, Mississippi, and Louisiana between 1796-1809. Hunter records his daily affairs, observations of territories, visits to trading centers, and commentary on international rivalries and relations with various indigenous peoples, including the Delaware, Cherokee, Chickasaw, Choctaw, and Osage. With rich, narrative accounts of western travel in the early national period—including exploration of Louisiana shortly after the Louisiana Purchase—the Hunter diaries ought to interest scholars researching the American west, Native America, and U.S. empire.
 
Interested researchers would do well to consult the detailed description of Hunter's four volumes available in the Early American History Note. For the purposes of diary researchers, the first volume (1796) warrants attention for its descriptions of indigenous peoples and early settlements. For example, Hunter offers an extended account of St. Louis (9/4/1796). He also describes an Indian woman whose nose was cut off by her husband for infidelity, a passage excerpted in Selected Quotations (9/9/1796). The 1802 journal documents Hunter's trip across Pennsylvania (Berlin, Carlisle, and Shippensburg), visit to a cave in Kentucky, and discussion of salt production at Blue Lick. Finally, the last two journals (1804, 1809) include various travels in the South, including a description of expedition to the Hot Springs of Arkansas (1804-1805) as well as longitudes and latitudes that researchers might use to trace Hunter's journey. Notably, Hunter discovers Mammoth bones, which he compares to those of Charles Wilson Peale, writing, "I cannot for bear mentioning a great natural curiosity I have just seen here [sic] about 2 ½ Tons of Bones of one or two Mammoths twice as large as Peals" (5/27/1804).

John Lyon's botany journal offers a record of travels in the eastern U.S. at the turn of nineteenth century. The volume includes memoranda dated 1799, with entries spanning 9/6/1802-8/6/1814. Lyon's entries document expenses—plants purchased and collected—with occasional notes about the places and peoples he encounters. Entries related to his travels in the eastern and southeastern U.S. record a visit to plantations (4/23/1803), an Indian settlement in Georgia (7/19/1803), and medical treatments for palsy, jaundice, and cancer (12/1/1808). Notably, Lyon discusses an albino slave in Athens, Georgia, as excerpted in Selected Quotations (9/25/1804). In the spring of 1806, he records travel to Dublin, Liverpool, and London. Thus, while the Lyon journal will certainly appeal to researchers exploring nineteenth century botany, they also feature content with wider appeal, such as U.S. slavery, transatlantic travel, indigenous trade, and antebellum medicine.
 

The John Pershouse papers contain two volumes of genealogical data from the late-eighteenth century, two letter books thought to belong to his nephew (Henry Pershouse), and one travel journal. The journal is noteworthy because it furnishes accounts of transatlantic travel in the early national period. While the first entry notes Pershouse's departure from Liverpool to Boston on a 56-day voyage (2/1/1800), regular entries begin around 1826 and continue to late-1838. As a Philadelphia merchant, Pershouse regularly records distances, accounts, and sights in Europe and the United States. Notably, he travels on a ship under the command of a Captain Matlack (presumably Timothy Matlack), travels extensively in the U.S. Southeast and Midwest, and notes the outbreak of the Belgian Revolution in 1830—all excerpted in Selected Quotations. Researchers interested in U.S. domestic and transatlantic travel during the antebellum period ought to find this volume particularly useful.
 

The journal was printed in APS Proceedings 26 (1889):1. The Kentucky travels can be found in Reuben G. Thwaites' Early Western Travels, 1748-1846.

Michaux maintained travel journals during his excursions throughout North America between 1787-1796. These 10 volumes furnish accounts of Charleston (September 1787), Saint Augustine and the Bahamas (1787-88), the Savannah River (December 1788), and Kentucky shortly after statehood (1794-95). Notably, Michaux records at least one visit to David Rittenhouse and Thomas Jefferson (12/14/1793), and he makes a proposal to the American Philosophical Society to explore unknown regions beyond Missouri and Kentucky, which Jefferson, then Secretary of State, accepts (12/10/1792). French-reading researchers—the volumes are maintained entirely in French—ought to find that these volumes offer insights into Southern and Western exploration during the early national period.
 
The journal was printed in APS Proceedings 26 (1889):1. The Kentucky travels can be found in Reuben G. Thwaites' Early Western Travels, 1748-1846.

Early lab notes provide insights into Flexner's research in Asia. For example, an 1899-1900 diary offers a window into Manilla hospitals, travel by rickshaw in Tokyo, and observations on geisha, saki, kimonos, and Emperor in Japan. A later notebook, which purports to document a "Trip to China" in August 1915, actually features observations on the population of Honolulu, female education in Korea, and treatment of tuberculosis in Japan.
 
Later notebooks record Flexner's travels in Europe and final years as director of the Rockefeller Institute. A book misdated "January 3, 1931" provides an account of his journey to England and France to attend the Inter-Allied Scientific Conference (9/15-12/28/1918). Notably, on that trip, Flexner learns of the armistice from his waiter and wonders what the future will hold for Germany after the dissolution of Austria-Hungary (11/11/1918). Interspersed in later journals, researchers will discover Flexner's reflections on "Hitler & Jewish intellectuals" (4/12/1933) and the musings on the "German University Situation" (4/15/1933). In a notebook dated December 1934, Flexner documents a trip to Cairo (12/21/1934) and an encounter with FDR, Jr. (1/18/1935). Several notebooks document his directorship at the Rockefeller Institute between 1930-35, including the effects of the Great Depression on the Institute's budget (6/5/1932), encounters with Rockefeller family in (1931 and 1935), and his personal ambitions (1931).
 
Perhaps most surprising are a series of loosely-bound notes from 1938-1944. Those notes include a trip to England on the eve of World War II (1/1/1938-2/7/1939) as well as reflections on the outbreak and progress of the war. "England & France having exhausted every effort to influence Hitler declared war on Poland," he writes two days after Germany invades Poland, adding, "No enthusiasm on the part of any population—German, English, French—on [going late] this war as happened in 1914!" (9/3/1939). A year later, he records the German invasion of Paris, writing, "poor French, poor world civilization" (6/15/1940). Researchers interested in the history of World War II will discover that Flexner studiously records and comments upon key events, including Italy's entrance into the war (6/10/1940), FDR's declaration of a state of emergency (5/27-5/28/1941), the Japanese bombing of Pearl Harbor (12/7/1941), the U.S. declaration of war on Japan (12/8/1941), the surrender of Italy (9/4/1943), D-Day (6/6/1944), the liberation of Paris (8/23/1944), and FDR's landslide reelection to a fourth term (11/7/1944).

With 38 volumes spanning 1899-1944, the Simon Flexner Diaries (1899-1944) provide rich insights into Flexner's laboratory work, leadership at the Rockefeller Institute, study of pathology and bacteriology in the Philippines, and observations on Europe at the outbreak of World War II. Alongside his laboratory notes from Manila (1899-1900), early notebooks record medical and ethnographic observations from Japan (1900, 1915), Korea (1915), and Hawaii (1915), whereas later journals document his late-tenure as director of the Rockefeller Institute (1930-35), travels in colonial Egypt (1934), and visit to France (1918, 1931) and England (1918, 1931, 1938-39) in the years between World War I and World War II. The diaries contained in the Simon Flexner Papers ought to interest scholars researching twentieth-century medicine, philanthropy, colonialism, and war, as well as Flexner's leadership of the Rockefeller Institute and contributions to the fields of pathology and bacteriology.
 
Early lab notes provide insights into Flexner's research in Asia. For example, an 1899-1900 diary offers a window into Manilla hospitals, travel by rickshaw in Tokyo, and observations on geisha, saki, kimonos, and Emperor in Japan. A later notebook, which purports to document a "Trip to China" in August 1915, actually features observations on the population of Honolulu, female education in Korea, and treatment of tuberculosis in Japan.
 
Later notebooks record Flexner's travels in Europe and final years as director of the Rockefeller Institute. A book misdated "January 3, 1931" provides an account of his journey to England and France to attend the Inter-Allied Scientific Conference (9/15-12/28/1918). Notably, on that trip, Flexner learns of the armistice from his waiter and wonders what the future will hold for Germany after the dissolution of Austria-Hungary (11/11/1918). Interspersed in later journals, researchers will discover Flexner's reflections on "Hitler & Jewish intellectuals" (4/12/1933) and the musings on the "German University Situation" (4/15/1933). In a notebook dated December 1934, Flexner documents a trip to Cairo (12/21/1934) and an encounter with FDR, Jr. (1/18/1935). Several notebooks document his directorship at the Rockefeller Institute between 1930-35, including the effects of the Great Depression on the Institute's budget (6/5/1932), encounters with Rockefeller family in (1931 and 1935), and his personal ambitions (1931).
 
Perhaps most surprising are a series of loosely-bound notes from 1938-1944. Those notes include a trip to England on the eve of World War II (1/1/1938-2/7/1939) as well as reflections on the outbreak and progress of the war. "England & France having exhausted every effort to influence Hitler declared war on Poland," he writes two days after Germany invades Poland, adding, "No enthusiasm on the part of any population—German, English, French—on [going late] this war as happened in 1914!" (9/3/1939). A year later, he records the German invasion of Paris, writing, "poor French, poor world civilization" (6/15/1940). Researchers interested in the history of World War II will discover that Flexner studiously records and comments upon key events, including Italy's entrance into the war (6/10/1940), FDR's declaration of a state of emergency (5/27-5/28/1941), the Japanese bombing of Pearl Harbor (12/7/1941), the U.S. declaration of war on Japan (12/8/1941), the surrender of Italy (9/4/1943), D-Day (6/6/1944), the liberation of Paris (8/23/1944), and FDR's landslide reelection to a fourth term (11/7/1944).

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).