ScientificAmerican1897-01-02.jpg Scientific American 1894-11-17ThumbnailsScientific American 1901-11-09Scientific American 1894-11-17ThumbnailsScientific American 1901-11-09Scientific American 1894-11-17ThumbnailsScientific American 1901-11-09Scientific American 1894-11-17ThumbnailsScientific American 1901-11-09Scientific American 1894-11-17ThumbnailsScientific American 1901-11-09
The signaling system of the Broadway and Seventh Avenue Railroad, New York City. Registering instrument and emergency wagon. Indicators and alarms in engine room of power house.



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

Restoration by: magscanner