The Martini-Henry Rifle (Weapon Book 26)
U.S. Rifle, Caliber .30 M1917 Enfield: FM 23-6
Sharpshooting Rifles of the American Civil War: Colt, Sharps, Spencer, and Whitworth (Weapon Book 56)
The Gun Digest Book of the Remington 870
Gunsmithing Pistols & Revolvers
Standard Catalog of Winchester Firearms
Mauser Military Rifles of the World
Gun Digest 2017