1906 St. Lawrence and Great Lakes Canals and Lighthouses Map
Before the Welland and St. Lawrence systems were rebuilt for modern freighters, Canadian surveyors mapped the lakes as a working commercial highway. This map comes from the 1st Edition of the Atlas of Canada, published by Natural Resources Canada, and it reads like a shipping master’s reference sheet.
Canals are plotted alongside every lighthouse position, with symbols separating fixed lights, revolving lights, and light ships. Sailing routes and steamship routes link Canadian ports to each other and to American ports, and a table gives sailing distances in geographical miles between U.S. and Canadian ports on the Great Lakes and the St. Lawrence. Freight and passenger traffic through the canals appears as of 1903-1904, along with total maintenance and construction costs for the Canadian canals. Lake depths are rendered in contours and graduated blue tints, darker for deep water, lighter over the shallows.
Map Shop offers this map on paper, laminated, mounted, railed, or framed.

