 In the early 2000s, the date was pushed back to include the Farm Security Administration works of the 1930s and works by international artists.The MoCP's permanent collection includes work by Ansel Adams, Harry Callahan, Henri Cartier-Bresson, Julia Margaret Cameron, Walker Evans, Dorothea Lange, Irving Penn, David Plowden, Aaron Siskind, and Victor Skrebneski among the 15,000-plus photographs and photographic objects, including gelatin-silver prints, color work, digital pieces, photograms, and various alternative processes.Notable exhibitions have included