ScientificAmerican1877-09-15.jpg Scientific American 1877-09-08ThumbnailsScientific American 1877-09-22Scientific American 1877-09-08ThumbnailsScientific American 1877-09-22Scientific American 1877-09-08ThumbnailsScientific American 1877-09-22Scientific American 1877-09-08ThumbnailsScientific American 1877-09-22Scientific American 1877-09-08ThumbnailsScientific American 1877-09-22

Burr's improved method of compressing cotton.



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

Restoration by: magscanner