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Scientific American 1880-07-31

ScientificAmerican1880-07-31.jpg Radio-Craft 1947-07ThumbnailsScientific American 1897-01-02Radio-Craft 1947-07ThumbnailsScientific American 1897-01-02Radio-Craft 1947-07ThumbnailsScientific American 1897-01-02Radio-Craft 1947-07ThumbnailsScientific American 1897-01-02Radio-Craft 1947-07ThumbnailsScientific American 1897-01-02

Manufacture of pulsometer pumps: Pulsometer Steam Pump Company, New York.



Source: Steve Kirch, creator of a wonderful website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner