23 books in all. Titles to include but are not limited to: Supica and Nahas' "Standard Catalog of Smith & Wesson" (3rd and 4th Editions), Neal and Jinks' "Smith & Wesson 1857-1945," Elmer Keith's "Sixguns by Keith," Elmer Keith's "Gun Notes" (Volume 1 and 2), "Smith & Wesson Collectors Association Twenty-Fifth Anniversary," and Horace Greeley's "The Colt U.S. General Officer's Pistol."