Includes "Description abrègée du Haut-Missouri adressé: a Monsieur don Zénon Trudeau," an account of a journey up the Missouri River, with descriptions of the life and manners of the Indian tribes, prepared for Don Zenon Trudeau, Lieutenant Governor of the Country East of the Illinois (n.d., [after 1795]). Extracts from journals, June 7, 1794-June 1796 (part printed from copy in Department of State Archives, Washington), 190 pages. Approximately 200 pages of letters. Materials contain descriptions of the culture of the Plains Indians (Cheyenne, Arikara, Mandan, Pawnee, Gros Ventres, Sioux, Poncas), dress, customs, marriage, birth; calumet dance, sun dance, buffalo dance; warfare.

This memoir includes sections on East Florida's boundaries, physical characteristics, navigation, Indian customs, Spanish settlements, Negroes, agricultural products, and climate. Also included are itineraries for East and West Florida.