ScientificAmerican1902-01-18.jpg Popular Science 1947-07ThumbnailsScientific American 1913-09-27Popular Science 1947-07ThumbnailsScientific American 1913-09-27Popular Science 1947-07ThumbnailsScientific American 1913-09-27Popular Science 1947-07ThumbnailsScientific American 1913-09-27Popular Science 1947-07ThumbnailsScientific American 1913-09-27
Comparison of the Panama and Nicaragua canal routes.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner