Black and white photographic print of watertight lock gates under construction on the Fourth Welland Canal, undated. A description states: 'A pair of the mighty lock gates that are 82 feet high, 45 feet wide and weigh about 480 tons each. 43,560…
Black and white photograph showing an unknown ship crossing the Aqueduct on the fourth Welland Canal, the old Aqueduct can be seen on the bottom right, c. 1958.