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Scientific American 1911-06-10

ScientificAmerican1911-06-10.jpg Scientific American 1907-09-07ThumbnailsScientific American 1914-07-04Scientific American 1907-09-07ThumbnailsScientific American 1914-07-04Scientific American 1907-09-07ThumbnailsScientific American 1914-07-04Scientific American 1907-09-07ThumbnailsScientific American 1914-07-04Scientific American 1907-09-07ThumbnailsScientific American 1914-07-04

Col. George Washington Goethals, Canal Builder.



Source: Steve Kirch, creator of a wonderful website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner