Felix Adler, religious leader and educator, taught courses in social and political ethics at Columbia between 1902 and 1933. The collection includes correspondence, manuscripts, typescripts, notes, photographs, and printed materials.
Americans United for Separation of Church and State, founded in 1947, is a non-profit and non-partisan organization dedicated to church-state separation. The Americans United Subject files are approximately 44 linear feet of secondary research material relating to the religious right and religion in government and schools. Over 300 organizations are represented, with most of the material consisting of clippings, mass mailings, and newsletters.