Collection search - Mercator's Projection with the great circle (shortest sailing) or air lines, illustrating the directness & capacity of the River St. Lawrence from Lake Erie to the Atlantic, as a means of communication between Europe and the Commercial Centre of the Great West. shewing also the extension of the Northern Pacific Railway route through Canada, to the nearest Atlantic Seaport at Montreal. Prepared for the Canadian Commissioners of the Paris Exhibition by Thos. C. Keefer, C.E. Montreal, 1855. [cartographic material]

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