161. Man operating machine Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1939–1959] Institution: National Archives at Boston
162. Man operating testing machine Creator: U.S. Army Materials and Mechanics Research Center. Public Affairs Office; Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1967–1984] Institution: National Archives at Boston
163. Man with machine Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1942–1959] Institution: National Archives at Boston
164. Man with machine carriage for cutting and welding Creator: U.S. Army Materials and Mechanics Research Center. Public Affairs Office; Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1908–1984] Institution: National Archives at Boston
165. Man with wrench at machine Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1939–1959] Institution: National Archives at Boston
166. Men and machine Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1954–1956] Institution: National Archives at Boston
167. Men and machine Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1908–1926] Institution: National Archives at Boston
168. Men inspecting machine Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1942–1959] Institution: National Archives at Boston
169. Men inspecting machine Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1939–1959] Institution: National Archives at Boston
170. Men observing machines Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1942–1959] Institution: National Archives at Boston
171. Men observing machines Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1942–1959] Institution: National Archives at Boston
172. Men operating machines Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1942–1959] Institution: National Archives at Boston
173. Mesta machine bldg. 311 Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: April 8, 1960 Institution: National Archives at Boston
174. Mesta machine bldg. 311 Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: April 8, 1960 Institution: National Archives at Boston
175. "Mesta" machine bldg. 311 Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: April 8, 1960 Institution: National Archives at Boston
176. "Mesta" machine bldg. 311 Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: April 8, 1960 Institution: National Archives at Boston
177. Method of suspending gun forging, heat treat shop Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1908–1926] Institution: National Archives at Boston
178. Method of suspending gun forging, heat treat shop Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: 1919 Institution: National Archives at Boston
179. Military officers observing machinery Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1942–1959] Institution: National Archives at Boston
180. New gas operated shape cutting machine Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: September 14, 1938 Institution: National Archives at Boston