An analysis of the material culture of one of the eight extant Mexteca codices, Codex Borgia: a Mesoamerican ritual and divinatory manuscript. Some knowledge of the Nahuatl language will help with interpretation.

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.

Founded in 1743 by Benjamin Franklin, the American Philosophical Society was the first learned society in the United States. For over 250 years, the Society has played an important role in American cultural and intellectual life. Until the mid-nineteenth century, the Society fulfilled the role of a national academy of science, national library and museum, and even patent office. Early members of the Society included Thomas Jefferson, David Rittenhouse, Benjamin Rush, Stephen Peter Du Ponceau, George Washington, and many other figures prominent in American history. The Archives of the American Philosophical Society consists of 192.25 linear feet of material, organized into thirteen record groups dating back to 1743. The Society's archives extensively documents not only the organization's historical development but also its role in American history and the history of science and technology.

Alfred Irving ("Pete") Hallowell was an anthropologist best known for his studies of Ojibwa culture and world-view, and the innovative use of the Rorschach Test in his studies of the psychological interrelations of individuals and their culture. Early in his career, Hallowell worked as a social case worker for Family Service, and even after moving on to study anthropology in 1920 (M.A.), he carried with him an interest in ethnic and racial culture, developing additional interests in psychological testing. Except for the years 1944-1947, when he taught at Northwestern University, Hallowell spent his entire career at the University of Pennsylvania where he was professor of anthropology, professor of anthropological psychiatry in the Medical School, and curator of social anthropology at the University Museum. A cultural anthropologist, Hallowell's use of clinical psychological methods, especially Rorschach tests, was both innovative and controversial in his discipline. In his research, he concentrated on the Algonkian Indians, especially the Abenaki and Ojibwa Indians of Canada and Wisconsin (Berens River, Lake Winnipeg, Manitoba, and Lac du Flambeau, Wisconsin areas), and the Saulteaux of Berens River. The Alfred Irving Hallowell Papers (1892-1981) contain correspondence, subject files, manuscripts of published and unpublished works by Hallowell, papers by colleagues and students, research notes kept by Hallowell, with a special emphasis on social organization, personality, behavior, psychology, religion, and folklore. The collection of several hundred photographs provides rich graphic documentation of Hallowell's work among the Ojibwa and Abnaki Indians during the 1930s.