Alma Ruth Lavenson was an American photographer active in the 1920s and 1930s. She worked with and was a close friend of Ansel Adams, Imogen Cunningham, Edward Weston and other photographic masters of the period. In 1926 she traveled to Mexico, where she met Diego Rivera and purchased the painting now in the Mills College Art Museum's collection. In 1930 she was introduced to Adams, Cunningham and Weston by art collector Albert Bender. Bender also wrote Lavenson a letter of introduction to give to Edward Weston. Two years later she was invited to participate in the famous Group f/64 show at the M.H. de Young Memorial Museum, although there is some uncertainty about whether she should actually be called a "member" of Group f/64, given her association with Pictorialism. The announcement for the show at the de Young Museum listed seven photographers in Group f/64 and said "From time to time various other photographers will be asked to display their work with Group f/64. Those invited for the first showing are: Preston Holder, Consuelo Kanaga, Alma Lavenson, Brett Weston."