The August, 1918 cover of Hugo Gernsback’s Electrical Experimenter magazine featured the “aerial mono-flyer of the future.”

This monorail seems like only a modest improvement in safety over the 1930's sightseeing death-trap known as the sky toboggan. But the mono-flyer is assuredly a less safe concept than the monorail of William H. Boyes, built around 1911.

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This image was found in the book Out of Time: Designs for the Twentieth-Century Future. According to the book, Gernsback introduced Electrical Experimenter in 1915 and changed the name of the magazine to Science and Invention in 1920.

This post originally appeared at Paleofuture.com.

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