The Betty Shepherd Musser photograph collection contains photographs of various members of the Pyper, Shepherd, and Spencer families. The collection also contains photographs of productions at the Salt Lake Theatre and publicity shots of performers, particularly Anna Pavlova.

The Gail Plummer photograph collection contains photographs of performers and performances in the Salt Lake Theater and at Kingsbury Hall at the University of Utah. Includes photographs of various professional performers of the time.

The George D. Pyper photographs consist primarily of those items which Pyper collected during his nearly thirty years as manager of the Salt Lake Theater. George Dollinger Pyper served as manager of the Salt Lake Theatre from 1898 to 1929. He also served as general superintendent of the Deseret Sunday School Union and as a member of the Mormon Tabernacle Choir.