1920. Canada. Natural Resources Intelligence Branch. Sea-bed contours in fathoms.; Includes distance chart and "Map showing ocean depths, tides & currents," approximately 1:7,000,000. 86 x 128 centime... (Ottawa], ).
    
  
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      1901. Geological Survey of Canada. Relief shown by shading and spot heights.; "Compiled from plane table sheets by John S. Brown ... Relief shading by John H. Renshawe."; "Watering-p... (Ottawa], ).