ScientificAmerican1877-11-24.jpg Scientific American 1877-11-10ThumbnailsScientific American 1877-12-01Scientific American 1877-11-10ThumbnailsScientific American 1877-12-01Scientific American 1877-11-10ThumbnailsScientific American 1877-12-01Scientific American 1877-11-10ThumbnailsScientific American 1877-12-01Scientific American 1877-11-10ThumbnailsScientific American 1877-12-01

The 42nd Street sewage tunnel, New York City.



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

Restoration by: magscanner