ScientificAmerican1894-02-24.jpg Scientific American 1894-02-03ThumbnailsScientific American 1902-02-08Scientific American 1894-02-03ThumbnailsScientific American 1902-02-08Scientific American 1894-02-03ThumbnailsScientific American 1902-02-08Scientific American 1894-02-03ThumbnailsScientific American 1902-02-08Scientific American 1894-02-03ThumbnailsScientific American 1902-02-08
Details of magneto for telephone calling. Design breakdown by part.



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

Restoration by: magscanner