Audiovisual materials of The Fortnightly of Chicago documenting members, events, activities, and the Brian Lathrop House. Includes photographs, negatives, slides, audiocassettes, one videocassette, and one DVD. Additional photographs can be found throughout the collection, especially in Series 15: Bryan Lathrop House, Subseries 3: Photographs. Audiocassette recordings primarily include oral history interviews with members, along with Fortnightly meetings and talks. Transcripts of some oral histories are in Series 12: Member and Biographical Information. Audiovisual recordings are not digitized and are unavailable for use.