The Missouri Outlaws is a book by Gustave Aimard. Aimard was the author of numerous books about Latin America and the American frontier. Excerpt: "Gustave Aimard was the adopted son of one of the most powerful Indian tribes, with whom he lived for more than fifteen years in the heart of the prairies, sharing their dangers and their combats, and accompanying them everywhere, rifle in one hand and tomahawk in the other."