261. Vacuum hot press showing internal working zone, ram and electrodes Creator: U.S. Army Materials and Mechanics Research Center. Public Affairs Office; Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1963–1967] Institution: National Archives at Boston
262. Bldg. 311 Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: 1918 Institution: National Archives at Boston
263. Bldg. 311, planer Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: 1918 Institution: National Archives at Boston
264. Men working in shop Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1908–1926] Institution: National Archives at Boston
265. Nibbling machine cutting 1/2" monel metal plate Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: October 7, 1936 Institution: National Archives at Boston
266. Rough machine shop Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: 1918 Institution: National Archives at Boston
267. Test specimen shop Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: 1918 Institution: National Archives at Boston
268. Work shop Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1908–1926] Institution: National Archives at Boston
269. Work shop Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1908–1926] Institution: National Archives at Boston
270. 10" Sliding railway mount M1919 Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1908–1926] Institution: National Archives at Boston
271. 1,000,000 volt x-ray equipment Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1939–1959] Institution: National Archives at Boston
272. The 100,000th centrifugally cast gun tube Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: February 20, 1944 Institution: National Archives at Boston
273. The 100,000th centrifugally cast gun tube Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: February 20, 1944 Institution: National Archives at Boston
274. 105 MM A.A. gun Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: August 25, 1926 Institution: National Archives at Boston
275. 105 MM A.A. gun Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: August 25, 1926 Institution: National Archives at Boston
276. 105 MM A.A. gun Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: August 25, 1926 Institution: National Archives at Boston
277. 105 MM fuse setter Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: August 25, 1926 Institution: National Archives at Boston
278. 105 MM fuse setter Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: August 25, 1926 Institution: National Archives at Boston
279. 12" Howitzer railway mount Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1908–1926] Institution: National Archives at Boston
280. 12" Howitzer RR mount M 1918 Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1918] Institution: National Archives at Boston
