1925. Canada. Natural Resources Intelligence Service. Description based on: 1932 sheet.; Each sheet lists the Commissioner of highways and the Chief Engineer.; On verso: Distance tables for various cit... Dept. of the Interior (Ottawa).
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1924. Canada. Natural Resources Intelligence Service. Relief shown by spot heights.; Inset: Alberta, showing dominion land agencies. 97 x 86 centimeters Scale 1:792,000; 12.5 miles to 1 inch General Ma... Natural Resources Intelligence Service (Ottawä).