Some titles to include: "Winchester: The Gun that Won the West" by Harold F. Williamson, "A History of the Colt Revolver: And the other Arms Made by Colt's Patent Fire Arms Manufacturing Company from 1836 to 1940" By Charles T. Haven & Frank A. Belden, "Colt's Variations of the Old Model Pocket Pistol 1848 to 1872" by P.L. Shumaker, and "Gun Collectors' Guide" by Martin Rywell".