36 books total including; "German Army Uniforms and Insignia 1933-1945" by, Brian L Davis, "Nazi Regalia" by, E.W.W. Fowler, "Exploring the Dress Daggers of the German Army" by, Thomas T. Wittmann, "German Infantry Weapons of World War 2" by, AJ Barker, and "World War II German Military Collectibles" by, Robert McCarthy.