Keywords: Gasmask for man and horse.jpeg Gas masks for man and horse demonstrated by American soldier circa 1917-18 1918 - 1919 Gasmasken für Mann und Pferd demonstriert von einem amerikanischen Soldaten ungefähr 1917-1919 516483 circa 1917 1919 Bureau of Medicine and Surgery Department of the Navy PD-USGov-Military-Navy <gallery> Gas masks for man and horse demonstrated by American soldier circa 1917-18 1918 - 1919 - NARA - 516483 tif A high resolution TIFF </gallery> World War I gas masks Black and white photographs of the United States Black and white photographs of men Black and white photographs of horses Men at work Soldiers of the United States Standing men Military use of horses Black and white photographs Horse gas masks Horses in World War I |