The collection includes correspondence, articles and book reviews written by Sontag, teaching and course materials, transcribed sermons and lectures, research materials, and collected reviews for his book “Sun Myung Moon and the Unification Church.” Notable items include a large selection of Sontag’s articles and book reviews written over a five-decade period, 1952 to 2002, as well as his personal research notes for select articles and publications. The collection also contains Sontag’s teaching materials related to his philosophy courses at Pomona College and materials related to Greek life on campus.