Science and Mechanics 1935-06.jpg Science and Mechanics 1935-04ThumbnailsScience and Mechanics 1935-08Science and Mechanics 1935-04ThumbnailsScience and Mechanics 1935-08Science and Mechanics 1935-04ThumbnailsScience and Mechanics 1935-08

Huge ocean-going ship crosses over city streets on a wide elevated canal, the "Sky Seaway."



Artist: Frank R. Paul

Source: eBay seller banjoflier