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Scientific American 1881-06-18

ScientificAmerican1881-06-18.jpg Scientific American 1881-01-01ThumbnailsScientific American 1894-08-04Scientific American 1881-01-01ThumbnailsScientific American 1894-08-04Scientific American 1881-01-01ThumbnailsScientific American 1894-08-04Scientific American 1881-01-01ThumbnailsScientific American 1894-08-04Scientific American 1881-01-01ThumbnailsScientific American 1894-08-04

Professor A. E. Dolbear's new telephonic system.



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

Restoration by: magscanner