ScientificAmerican1902-05-03.jpg Scientific American 1902-01-11ThumbnailsScientific American 1913-02-15Scientific American 1902-01-11ThumbnailsScientific American 1913-02-15Scientific American 1902-01-11ThumbnailsScientific American 1913-02-15Scientific American 1902-01-11ThumbnailsScientific American 1913-02-15Scientific American 1902-01-11ThumbnailsScientific American 1913-02-15
Some continental underground roads. Entrance to station, Buda-Pesth underground. Entrance to tunnel. Subway station, Berlin underground road. Buda-Pesth underground electric motor car. Underpinning of large building, Berlin underground railway. Putting on roof, Berlin subway.



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

Restoration by: magscanner