Recherche dans la collection - Welland Canals. Second Welland Canal. General plan from supply weir to Carleton Street. Office of Superintending Engineer, St. Catharines, Ont. Made by E.O.H. Traced by E.O.H. Approved C.W. West, Superintending Engineer. May 11th 1937. Revised - 1947. Revised - 1950. C.W.O. 103. [cartographic material]

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