DescriptionSteam Velocipede.png English: Steam Velocipede engraving from Google's scan of The velocipede: its history, varieties, and practice, author...
DescriptionRoper steam velocipede 1868 The Standard Reference Work.png English: Drawing of 1868 Roper steam velocipede. Sometimes attributed to W.W. Austin...
DescriptionRoper steam velocipede 1886 The Standard Reference Work.png English: Drawing of 1886 Roper steam velocipede. Page 52. Illustration by Hendee...
DescriptionSteam velocipde Knights Mechanical Dictionary page.png English: Figure 2503. Page 923. Knight's new mechanical dictionary: A description of...
- Stationerv -- Steam and vacuum - punii>s Steam-boilers Steam-boiler furnaces - - Steam-engines Steam-engine valves Steam water-elevators Stone-worldng...
DescriptionThe Greatest Mechanical Exhibition in the World. Roper steam handbill.png English: Sylvester H. Roper handbill advertising "The Greatest Mechanical...
DescriptionDetail-The Greatest Mechanical Exhibition in the World Roper steam handbill.png English: Sylvester H. Roper handbill advertising "The Greatest Mechanical...
automobile patents from 1789 to July 1, 1899.png English: Patent for improved Michaux-Perreaux steam velocipede. March 12, 1872. Title Digest of United States...
patents from 1789 to July 1, 1899 closeup.png English: Closeup: Patent for improved Michaux-Perreaux steam velocipede. March 12, 1872. Title Digest of United...
DescriptionDetail Sylvester H Roper Died in the Saddle Boston Daily Globe 2 June 1896.png English: Detail of "Died in the Saddle" Sylvester H. Roper obituary. Boston...
