Krupp's Guns Fred. [sic] Krupp's exhibit--Machinery Hall 1 silver albumen print; 21 x 26 cm. Mounted on backing board. Title on label: Krupp Exhibit title: Fried. Krupp, Essen, Exhibit #49, Machinery Hall, Bldg. #2. Implements of war, including cannons. Also visible are wheels, a showcase, and framed photographs. American flags hang from rafters.