Principal high voltage transmission lines and generating plants in Canada as of December 31, 1966
Cartographic Mathematical Data:
Scale 1:4,055,040. 1 in. = 64 miles. (W 142°--W 50°/N 85°--N 42°).
Includes index to generating plants and 6 insets. "Base map supplied by the Department of Energy, Mines and Resources. Prepared and printed by the Map Compilation and Reproduction Division from source material based on reports filed by the electric utilities with the Dominion Bureau of Statistics as compiled by National Energy Board."