Manuals (annual) containing historical sketch, constitution, list of members and officers, 1882-1937 (incomplete); meeting records including order of exercises, 1883-1926, and Centennial Meeting , 1829-1929, Nov. 30, 1929; scrapbook, 1829-1929, containing letters, programs, and clippings; minutes, including original transcript of minutes of the first meeting of Chi Alpha, Nov. 28, 1829, first book of minutes, 1829-1933, minutes, Nov. 27, 1829-Feb. 26, 1938 (21 v.) and Jan. 4, 1964-Dec. 16, 1967 (2 v.); Secretary's annual report, 1852-1938; Treasurer's annual report, 1858-1926; Topic Committee's annual report, 1897-1925; two committee reports, 1845, 1881; thirteen letters, 1838-1901; address, essays, and poems related to Presidents' inaugurals, 1867-1926, and other events, 1863-1938; obituaries of members, 1816-1937; and six memorial pamphlets.

Includes materials from Church Planning and Research Department; and materials from states of New York, New Jersey, and Connecticut organized by borough, city, metropolitan region, and its counterparts including census reports, church community studies, demographic monographs, evaluative reports, denominational histories, minutes, publications of data, and Regional Plan Association publications.

Correspondence including Union Settlement and Union Theological Seminary; General Synod of the Presbyterian Church, 1908-1915; Hebrew-English lexicon manuscript; Hebrew seminar record book, 1893-1906; lecture notes made by N.N. Skinner; earthenware Astarte figurine obtained at Megiddo.

Sophia Lyon Fahs was a Unitarian educator, author, editor, minister, innovator in religious education of children, one of the first women faculty members at Union Theological Seminary, and wife of Methodist minister Charles Harvey Fahs. The collection contains papers from Sophia Lyon Fahs' UTS Alumni File as well as her personal files, including materials related to her husband Charles Fahs' writings; correspondence with her biographer Edith Hunter as well as general correspondence; Riverside Church Sunday School papers and religious education publications; and materials donated by Dorothy Beck Fahs, including articles about SLF, memorials, and correspondence, as well as drafts and correspondence related to Cobb and Dorothy Fahs' work on Old Tales for a New Day (Buffalo, NY: Prometheus Books, 1981), the companion volume to Sophia Fahs' earlier books on mythic stories for children.

Administrative records, faculty-teacher reports, children's responses, class work, case studies of students, photographs, and articles, pamphlets, and brochures on the nature of the school.