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Scientific American 1882-02-04

ScientificAmerican1882-02-04.jpg Scientific American 1881-10-15ThumbnailsScientific American 1882-05-13Scientific American 1881-10-15ThumbnailsScientific American 1882-05-13Scientific American 1881-10-15ThumbnailsScientific American 1882-05-13Scientific American 1881-10-15ThumbnailsScientific American 1882-05-13Scientific American 1881-10-15ThumbnailsScientific American 1882-05-13

Progress of the Hudson River Tunnel -- the New York caisson



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

Restoration by: magscanner