ScientificAmerican1880-05-01.jpg Scientific American 1880-04-24ThumbnailsScientific American 1880-05-08Scientific American 1880-04-24ThumbnailsScientific American 1880-05-08Scientific American 1880-04-24ThumbnailsScientific American 1880-05-08Scientific American 1880-04-24ThumbnailsScientific American 1880-05-08Scientific American 1880-04-24ThumbnailsScientific American 1880-05-08

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

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