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.
The Beekman family consists of Cornelius C. Beekman, the founder and owner of Beekman Bank in Jacksonville, Oregon, his son Benjamin Beekman, a Portland, Oregon lawyer and UO Law School faculty member, and his daughter Carrie Beekman, who donated substantially to the University of Oregon. The collection consists of correspondence, diaries, miscellaneous manuscripts and publications, scrapbooks and photographs.