Trustees records include minutes, 1923-1996; reports, 1960-1975; and correspondence, 1913-1984. Deep Springs student body records contain minutes, 1917-1999, co-education studies reports, 1979-1994. Also student, community, committee and class projects, 1933-1990's; Telluride Association newsletters, 1915-1983; Telluride Association convention minutes, 1911-1999; and Deep Springs Alumni newsletters, 1966-1999.

Letters concerning coeducation written to Lindley C. Kent from Edward H. Magill, President, Swarthmore College; Charles H. Eliot, President, Harvard University; J.L. Pickard, President, State University of Iowa; John Bascom, President, University of Wisconsin; Noah Porter, President, Yale University; and James B. Angel, President, University of Michigan. Also Civil War letters and reminiscences.

Early papers of William C. Russel and letters of his mother Lucy Channing Russel; other family letters; three letters written by William C. Russel, two to Augustus J. Rogers concerning coeducation and the Physics Department at Cornell University, and one letter to George Bowen; letters of support for Russel during the crisis at Cornell, 1881, including two letters of Andrew Dickson White; financial records; legal papers; and two photographs.