The collection consists of 46 architectural drawings of theaters in Portland, Oregon, made by Lee Arden Thomas from 1926-1928. Included are original drawings for the Bagdad Theater (24 sheets), Capitol Theater (16 sheets), and Oriental Theater (4 sheets). Thomas was an architect based in Portland, Oregon, who designed a number of residences, commercial buildings, institutional buildings, and theaters in Oregon from the 1920s through the 1940s.