Recent acquisitions of the Smithsonian's National Museum that come under this heading are the Roper steam velocipede of the late 1860's and the Long steam tricycle of 1879-1881. While much more recent ...
Recent acquisitions of the Smithsonian's National Museum that come under this heading are the Roper steam velocipede of the late 1860's and the Long steam tricycle of 1879-1881. While much more recent ...
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