The collection consists of various materials, including correspondence, diaries, documents, and genealogical materials related to Moses Taylor Pyne (Class of 1877), the Pyne family, as well as the history of Princeton University and the town of Princeton. Genealogical materials consist of both originals and copies of estate papers, family charts, narratives, and manuscripts. Included are the research materials of Ernest Cheston, the Pyne family researcher, and his resulting manuscript, "Memorials of the Family of Pyne," ; the typescript of "A Journey in France in 1815" by Francis John Pyne; two translations by Pyne of "A Chronicle of the King En Pere (Pedro III of Aragon) and His Ancestors" by Bernat Desclot and "Genealogy and Descent of the House of Pinos" by Don Bernardo Galceran de Pinos IV. Papers documenting the history of Princeton, both the university and town, include correspondence, scrapbooks, and other material related to the Graduate College, the inauguration of President Hibben, the Endowment Fund, Cleveland Tower, the Hutton Collection, the Isabelle McCosh Infirmary, and the Princeton Battle Monument, among other topics.