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File:Panama-canal-shepherd-elevation.png

Description Panama canal
Date 1923
Source
  • BOOK SOURCE: "Historical Atlas" by William R. Shepherd, New York, Henry Holt and Company, 1923
  • ONLINE SOURCE: University of Texas Perry-Casteneda Map Collection, http://www.lib.utexas.edu/maps/historical/history_shepherd_1923.html http://www.lib.utexas.edu/maps/historical/shepherd/panama_canal_shepherd.jpg
Author

Licensing

Public domain
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