Some titles to include: "Colt .45 Service Pistols: Models of 1911 and 1911A1" by Charles W. Clawson, "U.S. Military Automatic Pistols 1894-1920" by Edward Scott Meadows, "A Study of the Colt Single Action Army Revolver" by Ron Graham, John A. Kopec, and C. Kenneth Moore, "The Post-War Colt Single Action Revolver" by Don Wilkerson, and "The World of Beretta" by R.L. Wilson.