The collection consists of souvenir theater programs for plays set in the trans-Mississippi West, dating from 1921 to 1994. Productions represented include dramas, comedies, and musicals such as Annie Get Your Gun (1946), Bus Stop (1955), Flower Drum Song (1958), Show Boat (1948), and Zoot Suit (1979). The majority of the programs are from Broadway productions, and are dated by year of the New York opening when not indicated on the program. Additional programs represent touring companies of Broadway productions and locally-produced shows including Ramona (Hemet, California, 1939) and Promised Valley (Salt Lake City, Utah, 1947).