ScientificAmerican1893-11-11.jpg Scientific American 1893-11-04ThumbnailsScientific American 1893-11-18Scientific American 1893-11-04ThumbnailsScientific American 1893-11-18Scientific American 1893-11-04ThumbnailsScientific American 1893-11-18Scientific American 1893-11-04ThumbnailsScientific American 1893-11-18Scientific American 1893-11-04ThumbnailsScientific American 1893-11-18

The World's Columbian Exposition: Exhibit of the Otto Gas Engine.



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

Restoration by: magscanner