Inside Out Library · ExploreScientific American, Vol. 78, No. 9 (1898) (1898)leaf 8te GENERAL VIEW OF INTERIUR OF GUN FACTORY AT WASHINGTON. © 1898 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.More pictures from Scientific American, Vol. 78, No. 9 (1898)More like this
