ScientificAmerican1875-08-14.jpg Popular Mechanics 1940-10ThumbnailsScientific American 1877-09-08Popular Mechanics 1940-10ThumbnailsScientific American 1877-09-08Popular Mechanics 1940-10ThumbnailsScientific American 1877-09-08Popular Mechanics 1940-10ThumbnailsScientific American 1877-09-08Popular Mechanics 1940-10ThumbnailsScientific American 1877-09-08
Blackman's wood-carving machine.