Includes correspondence, autobiographical notes, addresses, articles, and drawings. The collection reflects Riddle's interests in breeding, heredity, and evolution. He was interested in humanism and the presentation of biological and evolutionary theories. There is much information on Riddle's activities in favor of freedom of scientific teaching, especially in high schools.

The polymath Francis Galton led a privileged and adventurous life, lending his talents to the development of statistical inference, scientific meteorology, psychology, and becoming one of the first to apply the evolutionary theories of his cousin Charles Darwin to human populations, founding the new fields of eugenics and biometrics. The Galton Collection is a miscellaneous assemblage of 15 letters and one photocopy written by Francis Galton to a variety of correspondents. These letters reflect Galton's research in meteorology, statistics, and, to a lesser degree, the heredity of intelligence.

In addition to correspondence relating to poultry genetics and egg production, there are significant notes concerning breeding records, heredity, and race genetics. There are 42 class notebooks kept by Goodale, and 62 volumes of Mount Hope Poultry Farm family, hatching, mating records for the period 1918 to 1956. The collection includes photographs, glass-lantern lecture slides, and artifacts of poultry feathers.

The Austrian biologist Paul Kammerer was an outspoken proponent of the theory of inheritance of acquired characteristics (Lamarckism) during the time in which Mendelian theory was becoming deeply entrenched in biology. His major research efforts, straddling the First World War, centered on experiments performed on salamanders and on the midwife toad, and seemed to provide empirical support for a Lamarckian mechanism in evolution. He also developed a monistic "law of seriality," in which he attempted to explain coincidence as the product of a higher order natural law. A Socialist, Kammerer was widely regarded as a brilliant scientist, but for scientific, personal, and political reasons, he engendered as much antagonism as support, preventing him from ever obtaining a regular university appointment. His career ended tragically in allegations of fraud, followed by his suicide. The Kammerer Papers is comprised of photocopies of materials that document the brief, but controversial career of a non-Darwinian evolutionary biologist. The bulk of the collection consists of photocopies of articles by Kammerer, often from obscure newspapers or periodicals, along with a small number of letters to his friend Hugo Iltis, the geneticist and biographer of Mendel. Nearly all of these pertain to the Kammerer's experiments with amphibians to test Lamarckian inheritance or to his other biological theories. The collection also includes a small number of items dating from after Kammerer's death, but relating to his life and work, including two letters from his former supervisor Hans Przibram, a letter from Hugh Iltis (Hugo's son) to Arthur Koestler and the reply, and a brief biographical reminiscence of Kammerer written by Hugo Iltis.

In 1910, the Eugenics Record Office was founded in Cold Spring Harbor, New York, as a center for the study of human heredity and a repository for genetic data on human traits. It merged with the Station for Experimental Evolution in 1920 to become the Department of Genetics at the Carnegie Institution, and under the direction of Charles B. Davenport and later of Albert Blakeslee and Milislav Demerec, it became the most important center for eugenic research in the nation. However with intellectual currents shifting, the Carnegie Institution stopped funding the office in 1939. It remained active until 1944, when its records were transferred to the Charles Fremont Dight Institute for the Promotion of Human Genetics at the University of Minnesota. When the Dight closed in 1991, the genealogical material was filmed by the Genealogical Society of Utah and given to the Center for Human Genetics; the non-genealogical material was not filmed and was given to the American Philosophical Society Library. Following the original order, the ERO Records are organized into thirteen series: I. Trait Files, 1670-1964 ; II. Trait Card Boxes, 1904-1939 ; III. Family Traits Card Boxes, 1920-1939 ; IV. RFT Submitters Card Catalog, 1910s-1930s ; V. Record of Family Traits, 1911-1940 ; VI. Fitter Family Studies, 1913-1936 ; VII. Field Worker Files, 1911-1926 ; VIII. Volunteer Collaborators, 1912-1939 ; IX. Pedigrees, 1828-1926 ; X. Harry H. Laughlin Files, 1915-1938 ; XI. Bibliographia Eugenica, 1734-1934 ; XII. Midget Schedules, 1919-1964 ; XIII. Index Card Boxes, 1910s-1930s.

This is a diverse collection, including correspondence, drafts of letters, notes and notebooks (on biometric methods; tables and formulae; science, nature and method; coefficient and correlation; vitalism; Japanese language); commonplace book (1924); autobiography; and over one hundred folders of unpublished writings. The correspondence and other material covers a variety of topics, including biology, eugenics, evolution and natural selection, human heredity, paramecia, protozoa genetics, U.S. immigration policy. There is much on the Seventh International Congress of Zoology (1907); letters to his father and wives, and from students and colleagues on his seventy-fifth birthday, 1943 (1 v.); diplomas and certificates of membership; and photographs.

The correspondence in this collection concerns behavior genetics, evolution, heredity, etc. There is material relating to the congresses of the Permanent International Committee on Genetics, and the IXth (Bellagio, 1953), Xth (Montreal, 1958), and XIth (The Hague, 1963) International Congress of Genetics. There is also correspondence pertaining to the Cold Spring Harbor Symposium on Quantitative Biology (1955), the Mendel Semi-Centennial Symposium (1950), the Soviet geneticists' visit to the U.S. in 1967, and to Anton R. Zhebrak.

One of the most important natural historians in nineteenth century Britain, Charles Darwin provided the first compelling mechanism to account for organismal evolutionary change. Although lacking a coherent model of heredity, Darwin's natural selection has exerted an enormous influence over the biological sciences and since the introduction of Mendelian genetics, had remained the key unifying principle in the discipline. The APS Darwin Papers are a large a valuable assemblage of Darwin's correspondence with scientific colleagues, including Charles Lyell and George J. Romanes. They are included in the print version of the Correspondence of Charles Darwin (Cambridge Univ. Press).

A modest Midwesterner who became one of the most influential geneticists of the first half of the 20th century, William E. Castle spent his career at Harvard and the University of California working on patterns of inheritance in mice, horses, and a variety of other mammalian taxa. An early proponent of Mendelian theory, Castle was director of the Bussey Institution at Harvard for almost thirty years, helping to train a number of important geneticists. The Castle Papers contain one linear foot of correspondence dating primarily from the period after Castle's "retirement" to Berkeley in 1936 until his death in 1962, dealing almost exclusively with his research on horse breeding and the inheritance of coat coloration in horses. Castle's correspondence with his former student L. C. Dunn is an exception, focusing on mouse genetics and ranging to a variety of topics from the conduct of scientific research during the Second World War to Castle's interests in the early history of genetics.

L.C. Dunn was one of the most significant figures in the emerging field of developmental genetics in the 20th century. His T-locus work with the mouse established a number of important genetic principles, including ideas of gene interaction, the distribution of alleles in wild populations, and the factors that influence fertility. He wrote an important textbook of genetics, Principles of Genetics (1925), in collaboration with Sinnott (and later Dobzhansky); other significant books authored or co-authored by him include Heredity, Race and Society (1946), and A Short History of Genetics (1965). He worked in poultry genetics for eight years at the Agricultural Experiment Station in Storrs, CT, from 1920-1928. The remainder of his career was spent at Columbia University, where he worked with rats, mice, and fruit flies, and proved himself to be an inspiring teacher as well. His interest in international scientific collaboration led him to establish ties to Soviet scientists, and to help relocate refugee scientists during World War II. He remained active in his profession to the end of his life. This collection includes correspondence, reports, notebooks, lectures, and photographs. It is a rich collection, documenting the development of American genetics as well as Dunn's interests in humanitarian efforts and international affairs. There is significant material relating to American-U.S.S.R. contacts, particularly in the files on the American-Soviet Friendship Council and the American-Soviet Science Society. There is much, as well, on the impact of the Lysenko controversy in the U. S. Dunn's interest in European scientists can also be seen in the sizable amount of material on the Emergency Committee in Aid of Displaced German Scholars. Material relating to the Kilgore and Magnusson bills for the support of science (predecessors to the NSF) are also in the collection. Of note are data on the following: National Research Council Committee on Experimental Animals and Plants; research on the population study of the Jewish community in Rome; and Columbia University. There is much in the correspondence concerning Drosophila, poultry genetics, and other such topics; Walter Landauer is Dunn's major correspondent.

The James V. Neel Papers document nearly every phase of the career of one of the founders of human population genetics in the United States. Neel was particularly thorough and organized, and retained virtually all of his significant scientific correspondence, committee reports, minutes of meetings, and drafts of manuscripts. The collection also includes data collected during Neel's work among the Xavante, Yanomanö and other indigenous populations. In a career that spanned the period from the late work of Thomas Hunt Morgan and Charles B. Davenport to the contemporary world of molecular genetics and nucleic acids, Neel knew, worked with, and corresponded with many of the most influential 20th century practitioners of genetics. The collection begins in earnest in 1943, after Neel had decided to focus on human genetics. Neel's work with Drosophila and none of his Drosophila manuscripts are found in the collection.