11 Colt firearms reference books in all. Titles to include but are not limited to: Haven and Belden's "A History of the Colt Revolver and the Other Arms Made by Colt's Patent Fire Arms Manufacturing Company from 1836 to 1940," William Goddard's "The Government Models," James Serven's "Colt Firearms 1836-1960," and Edward Meadows' "U.S. Military Automatic Pistols 1920-1945."