Items
Item Number Date Description
1448 More info . . . 1448 1 August 1932 West Neebish Channel, Course 6 Rock Cut: View looking south from upper cofferdam, excavation complete to 28 ft. grade
1449 More info . . . 1449 1 August 1932 West Neebish Channel, Course 6 Rock Cut: View looking north from lower cofferdam, excavation complete to 28 ft. grade
1450 More info . . . 1450 8 July 1932 St. Marys Falls Canal: Lower New timber guard gates, lower end of Weitzel Lock, pontoon derrick handling one leaf through Poe Lock
1451 More info . . . 1451 28 March 1933 St. Marys Falls Canal: View looking down east side of Poe Lock pump tunnel shaft, numbers give elevation referred to canal datum
1451a More info . . . 1451a 7 June 1933 St. Marys Falls Canal: Repairs to timber wall, north side of west nose pier, between Weitzel and Poe Locks, and painting upper Poe Lock guard gates, view looking west
1452 More info . . . 1452 28 March 1933 St. Marys Falls Canal: Poe Lock pump tunnel shaft, numbers give elevation referred to canal datum
1452a More info . . . 1452a 7 June 1933 St. Marys Falls Canal: Repairs to timber wall, north side of west nose pier, between Weitzel and Poe locks, at junction of old cofferdam, and painting upper guard gates of Poe Lock, canal unwatered, view looking southeast
1453 More info . . . 1453 24 October 1933 St. Marys Falls Canal: Dredge M- No. 9, working on Lake Munuscong Channel, contract with Great Lakes Dredge and Dock Co. dated 6 October 1933 under NIRA
1454 More info . . . 1454 24 October 1933 St. Marys Falls Canal: Dredge M- No. 9, working on Lake Munuscong Channel, contract with Great Lakes Dredge and Dock Co. dated 6 October 1933 under NIRA
1455 More info . . . 1455 25 May 1935 St. Marys Falls Canal: Davis Lock, load of autos upbound
1456 More info . . . 1456 25 October 1935 St. Marys Falls Canal, Lock Filling Control-Signal System: Transmitting filling signal from lower end of Davis Lock
1457 More info . . . 1457 25 October 1935 St. Marys Falls Canal, Lock Filling Control-Signal System: Receiving filling signal at upper end of Davis Lock
1458 More info . . . 1458 25 October 1935 St. Marys Falls Canal, Lock Filling Control-Signal System: Control valve set to correspond with filling signal repeating order back to lower end of Davis Lock
1459 More info . . . 1459 25 October 1935 St. Marys Falls Canal, Lock Filling Control-Signal System: Receiving check on filling signal at lower end of Davis Lock
1460 More info . . . 1460 25 October 1935 St. Marys Falls Canal, Lock Filling Control-Signal System: Signal switch operated by Tanner Valve indicating direction of valve motion
Showing 1486 to 1500 of 1780 items