The American Eugenics Society Records is a small, selective collection offering information on various periods of the Society's development, including correspondence, membership records, and formal and informal material on its history. Of particular interest are the records of the Society's numerous committees, including the Executive Education, Population Genetics Research, Legislative, and local and state committees, and documentation of AES educational initiatives at state fairs and eugenic health exhibits and contests, especially the Fitter Family Contests. A scrapbook containing 97 images of Fitter Family and eugenic health exhibits, 1924-1926, provides valuable visual information of AES activities. One series in the collection relates to the numerous Princeton Conferences and to a genealogical survey of the populations of Shutesbury and Leverett, Massachusetts, and there is also material on the Population Council. The collection largely revolves around Frederick Osborn, the moving force in the Society for most of its later history, and it includes approximately 100 papers written or delivered by Osborn concerning eugenics, genetics, or population related topics. This note is currently under review for revision.

One of the seminal figures in the emergence of the Modern or Neo-Darwinian Synthesis during the mid-twentieth century, George Gaylord Simpson (1902-1984) helped define the unique contribution made by vertebrate paleontology to the life sciences. A specialist in Mesozoic and early Cenozoic mammals, Simpson's contributions to the fusion of Darwinian natural selection and Mendelian genetics were both empirical and theoretical, culminating in his major works Tempo and Mode in Evolution and The Meaning of Evolution. From his posts at the American Museum of Natural History (1927-1959), Columbia University (1945-1959), Harvard (1959-1967), and the University of Arizona (1967-1984), Simpson became one of the most influential paleontologists of the century, helped in part by his ability to write successfully for both a technical, professional audience and a popular audience. The Simpson Papers include a comprehensive assemblage of professional and personal correspondence, reflecting nealy all phases of Simpson's career. Written with charm, wit, and a sense of literary style, the correspondence touches on all aspects of modern paleontology, providing an important perspective on the emergence of contemporary evolutionary theory, biogeography, systematic theory and methodology, the relationship of science and religion, and creationism, as well as more general issues in scientific epistemology and social and political issues. The collection also includes autobiographical data and writings, lectures, class notes and papers, research data, material on his scientific expeditions (diaries in carbon form, photos, notes, etc.), publication material (he was author of some 800 publications), extensive photographic material, diplomas, and medals.