The Gledhill Santa Barbara Glass Plate Negative Collection consists of approximately ten thousand (10,000) glass plate negative and positive photographs, created primarily by photographers N. H. Reed and I. N. Cook, two of the most prolific commercial photographers in Santa Barbara during the period 1880-1920.

The Santa Barbara Legacy Reel Audio Tape Collection contain recordings of oral histories, radio programs, meetings, lectures, telephone conversations, ceremonies, and music perfomances of local old timers and influential people. These 184 electronic files, extracted from 98 one quarter-inch reel-to-reel magnetic tapes, represent the earliest audio recordings made by the Santa Barbara Historical Museum.