Recherche dans la collection - Mercators projection with the great circle shortest sailing or air lines, illustrating the directness and 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. Showing the extension of the Northern Pacific Railway route through Canada, to the nearest Atlantic seaport at Montreal. [cartographic material] / Prepared for the Canadian Commissioners of the Paris exhibition by Thos. C. Keefer, C.E., Montreal 1855 ; C. Mathews Lith, Montreal.