Desperate Men: The True Story of Jesse James, Butch Cassidy, and The Wild Bunch, first published in 1949 and updated and enlarged in 1962 (under the title Desperate Men: Revelations from the Sealed Pinkerton Files) is historian James Horan's well-researched yet easy-to-read account of the lives and crimes of outlaws Jesse James, Butch Cassidy, the Sundance Kid, and a host of other renegades of the American Midwest and West. The book provides a unique, in-depth look at the work of the Pinkerton men in bringing these fugitives to justice and their efforts to provide a measure of security to an otherwise nearly lawless region. Included are 40 pages of illustrations and a complete index.