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Scientific American 1911-06-10

ScientificAmerican1911-06-10.jpg Scientific American 1893-06-24ThumbnailsScientific American 1914-11-14Scientific American 1893-06-24ThumbnailsScientific American 1914-11-14Scientific American 1893-06-24ThumbnailsScientific American 1914-11-14Scientific American 1893-06-24ThumbnailsScientific American 1914-11-14Scientific American 1893-06-24ThumbnailsScientific American 1914-11-14

Col. George Washington Goethals, Canal Builder.



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

Restoration by: magscanner