"Grinnel Glacier, Glacier National Park, Montana,", 1939

Student papers, primarily laboratory and lecture notes from Cornell University; documents, notebook, and scrapbook relating to his experiences in the U.S. Army during World War II and in the Army Reserve; subject files relating to his teaching at Lafayette College and his work as a geologist; research files, card files, manuscripts, photographs, reviews, and articles on The World of Ice; research files for a projected work, The World of Water; scrapbooks; geology and ornithology field notebooks; personal correspondence and photographs; and other publications by James L. Dyson. Also, correspondence with Lolita Dyson about a scholarship established at Lafayette College in memory of her husband.