This dissertation deals with only the first forty-three years of Clark's life.

This dissertation reveals how Joseph Henry's teaching related to his research, and how it reflected his overall scientific outlook and affected developments in physics.

This dissertation is a biography of Thomas Hutchins, the military engineer, map-maker, and "Geographer of the United States."

This dissertation covers the time period from David Hall's arrival in Philadelphia as Franklin's employee and business partner, to Hall's purchase of Franklin's share of the printing business and later career. Kany shows that Franklin's printing reputation was enhanced by the work of David Hall.

This dissertation describes Pratt as the first English novelist to introduce the theme of the American Revolution as material for fiction, and mentions that Pratt, using the name Courtney Melmoth, met Benjamin Franklin in Paris.

This dissertation discusses Nathaniel Chapman's participation in and influence on the medical profession in Philadelphia.

This dissertation traces Hans Driesch's development from a biologist to a philosopher.

This dissertation is a biography of William Sherard, the man whose bequest to Oxford established the Sherardian Chair of botany.

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.