Scientific American 1913-02-15.jpg Scientific American 1907-09-21ThumbnailsScientific American 1913-07-26Scientific American 1907-09-21ThumbnailsScientific American 1913-07-26Scientific American 1907-09-21ThumbnailsScientific American 1913-07-26Scientific American 1907-09-21ThumbnailsScientific American 1913-07-26Scientific American 1907-09-21ThumbnailsScientific American 1913-07-26
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