aircraft armament series German aircraft guns and cannons / by E. J. Hoffschmidt ww ii combat series Navy uniforms, insignia, and warships of WW II / edited by W. H. Tantum & E. J. Hoffschmidt German Army, Navy uniforms and insignia : 1871-1918 / edited by W. H. Tantum, IV & E. J. Hoffschmidt German tank and antitank in World War II / Edited by E. J. Hoffschmidt & W. H. Tantum, IV
