ScientificAmerican1903-06-06.jpg Scientific American 1903-05-30ThumbnailsScientific American 1903-06-13Scientific American 1903-05-30ThumbnailsScientific American 1903-06-13Scientific American 1903-05-30ThumbnailsScientific American 1903-06-13Scientific American 1903-05-30ThumbnailsScientific American 1903-06-13Scientific American 1903-05-30ThumbnailsScientific American 1903-06-13

Fiftieth anniversary of the opening of the Sault St. Marie Canal. View of locks.



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

Restoration by: magscanner