The collection contains a four-page letter written by Frances Cabanne Saportas of Long Beach, California, January 16, 1934, to A.E. Sheldon. She writes about Jean Pierre Cabanne, her great-grandfather, and provides information on the American Fur Company and its founders, on the extended Cabanne family, and on Cabanne's post in Nebraska. Cabanne's fur trade connections in St. Louis and with the Sarpy family are described. Also included is typed transcription of a notice of the dissolution of Cabanne and Company in 1819.