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 photographic print showing the constructing of flight locks (Twin Flight Locks 5 and 6) on the Fourth Welland Canal at Thorold, c. 1927-1932.
Black and white photographic print showing Lock 8 construction, Port Colborne, c. 1927-1932.
It is captioned 'Lock No. 8 is 1,380 feet long between the inner gates and is the longest lock in the world, equal to almost three city blocks. A ship…