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Scientific American 1913-02-15

Scientific American 1913-02-15.jpg Scientific American 1912-03-02ThumbnailsScientific American 1913-03-29Scientific American 1912-03-02ThumbnailsScientific American 1913-03-29Scientific American 1912-03-02ThumbnailsScientific American 1913-03-29Scientific American 1912-03-02ThumbnailsScientific American 1913-03-29Scientific American 1912-03-02ThumbnailsScientific American 1913-03-29

Building the four-track subway beneath Broadway, New york. This sectional view, taken at the new City Hall station, shows the construction of the subways by the "cut-and-cover" method, by which the material is excavated without any disturbance of the surface of the streets and sidewalks.



Artist: C. McKnight-Smith

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

Restoration by: magscanner