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361. 305 MM RR mount

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: April 15, 1920
Institution:: National Archives at Boston

362. 305 MM RR mount

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: April 15, 1920
Institution:: National Archives at Boston

363. 305 MM RR mount

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: April 15, 1920
Institution:: National Archives at Boston

364. 305 MM RR mount

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: April 15, 1920
Institution:: National Archives at Boston

365. 305 MM RR mount

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: April 15, 1920
Institution:: National Archives at Boston

366. 305 MM RR mount

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: April 15, 1920
Institution:: National Archives at Boston

367. 305 MM RR mount

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: April 15, 1920
Institution:: National Archives at Boston

368. 305 MM RR mount

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: April 15, 1920
Institution:: National Archives at Boston

369. 305 MM RR mount, assembling side frames

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: April 15, 1920
Institution:: National Archives at Boston

370. 305 MM RR mount, fitting diaphrams to side frames

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: April 15, 1920
Institution:: National Archives at Boston

371. 37 M/M AA elevated 45 degrees

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: January 21, 1937
Institution:: National Archives at Boston

372. 37 M/M AA elevated 90 degrees

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: January 21, 1937
Institution:: National Archives at Boston

373. 37 M/M AA in traveling position

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: January 21, 1937
Institution:: National Archives at Boston

374. 37 M/M in firing position

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: January 21, 1937
Institution:: National Archives at Boston

375. 4 Brown hoist boom failure

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: September 12, 1920
Institution:: National Archives at Boston

376. 500 lb vacuum furnace

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: [ca. 1959–1962]
Institution:: National Archives at Boston

377. 5th Advanced Training Course Group

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: January 1942
Institution:: National Archives at Boston

378. 60' Boom from 4 brown hoist crane failure 912-20

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: [September 12, 1920]
Institution:: National Archives at Boston

379. 6th Advanced Training Course Group

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: May 1942
Institution:: National Archives at Boston

380. 76 MM gun tube burst by hydraulic pressure

Creator:: Watertown Arsenal (Mass.)
Format:: Photographs
Collection:: Watertown Arsenal Photographs
Date:: May 3, 1943
Institution:: National Archives at Boston