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.