281. 12" Mortar M1896 M3 Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: April 3, 1914 Institution: National Archives at Boston
282. 12" Motor mounted on 36" gauge trucks Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: May 17, 1921 Institution: National Archives at Boston
283. 120 M/M A.A gun Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1949–1950] Institution: National Archives at Boston
284. 14" DC M1907 MI Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: April 6, 1914 Institution: National Archives at Boston
285. 14" DC M1907 MI Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: April 6, 1914 Institution: National Archives at Boston
286. 14" Gun Ry. Mt. cradle, bore for recoil, recuperator and pull rods Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1908–1926] Institution: National Archives at Boston
287. 14" RR mount Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: June 8, 1922 Institution: National Archives at Boston
288. 14" Ry. Mt., cradle, boring and threading holes in trunnions Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1908–1926] Institution: National Archives at Boston
289. 15 Pounder on BC M1908 Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: April 4, 1914 Institution: National Archives at Boston
290. 16" Bar. carr. model 1919 Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1908–1926] Institution: National Archives at Boston
291. 16" Barbette carriage Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1920] Institution: National Archives at Boston
292. 16" Barbette carriage Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1920] Institution: National Archives at Boston
293. 16" Barbette carriage Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1920] Institution: National Archives at Boston
294. 16" Barbette carriage Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1920] Institution: National Archives at Boston
295. 16" Barbette carriage Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1920] Institution: National Archives at Boston
296. 16" Barbette carriage Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1920] Institution: National Archives at Boston
297. 16" Barbette carriage Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1920] Institution: National Archives at Boston
298. 16" Barbette carriage Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1920] Institution: National Archives at Boston
299. 16" Barbette carriage Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1920] Institution: National Archives at Boston
300. 16" Barbette carriage Creator: Watertown Arsenal (Mass.) Format: Photographs Collection: Watertown Arsenal Photographs Date: [ca. 1920] Institution: National Archives at Boston