John Commingers Ainsworth (1822-1893) was the major founder of the Oregon Steam Navigation (OSN) Company, the most powerful transportation monopoly in the Pacific Northwest. Ainsworth was also involved in a number of other ventures, including the Northern Pacific Railroad (NPRR) and various gold, silver and coal mining operations. The John Commingers Ainsworth Papers contain Ainsworth's diaries, autobiography, personal correspondence, photographs, and the business records of the Oregon Central Railroad, Oregon Steam Navigation Company, Northern Pacific Railroad Company, and various mining, building and shipping enterprises.
Gerald H. Robinson (1927-) is a fine art photographer and photography advocate as well as a noted Portland attorney. He was a founding member of the Friends of Photography and Portland's Group 15, has exhibited his work widely, and served as an instructor in photography at several colleges. The collection consists of matted and signed prints dating from 1949-2000, as well as 14 prints created by his associates: Bernard Freemesser (8), Larry Smith (1), Max Allard (2), Marvin R. Goodman (2), and Bob Barnes (1).