The Harold Herbert Leich papers (1910-1985) contain a journal, correspondence, manuscripts, publications, magazine articles, news clippings, and maps. Harold Leich worked for the Civil Service Commission and helped organize the Environmental Protection Agency. He was an active outdoorsman and took extended river trips on the Yellowstone and Colorado Rivers. He wrote articles on water pollution for a variety of magazines.

The Aaron Belnap Ross papers (1857-1971) consists of poetry, clippings, journals, and biographical sketches of Dr. Ross, mainly as they pertain to his interest in river running on the Green, Colorado, and other rivers of the western United States.