The Glade Peterson papers (1950s-1990s) consist of materials documenting the professional life of Glade Peterson (1928-1990), opera performer and founder of the Utah Opera Company. The bulk of the collection consists of programs for Utah Opera Company productions and social events concerning the arts in Utah. Scrapbooks containing news clippings, announcements, programs, photographs, actor/actress biographical sketches, and invitations also make up a large part of the collection. Glade Peterson was responsible for bringing grand opera to Utah.
The Gail Plummer papers (circa 1960-1980) consist mainly of scrapbooks detailing productions at Kingsbury Hall, the University of Utah's summer festivals, and Babcock Theater. Other scrapbooks, theater programs, and family and personal materials are also included. These materials were collected by Gail Plummer, a speech and theater instructor at the University of Utah, and his wife, Elva Plummer.