ScientificAmerican1892-01-16.jpg Scientific American 1892-01-09ThumbnailsScientific American 1892-01-23Scientific American 1892-01-09ThumbnailsScientific American 1892-01-23Scientific American 1892-01-09ThumbnailsScientific American 1892-01-23Scientific American 1892-01-09ThumbnailsScientific American 1892-01-23Scientific American 1892-01-09ThumbnailsScientific American 1892-01-23

The world's Columbian Exposition -- the traveling sidewalk now in operation.



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

Restoration by: magscanner