The Roper steam velocipede was built by the inventor and builder from what city?
Roper steam velocipede: The Roper steam velocipede was a steam-powered velocipede built by inventor Sylvester H. Roper of Roxbury, Boston, Massachusetts, United States sometime from 1867–1869. Sylvester H. Roper: Sylvester Howard Roper (November 24, 1823 – June 1, 1896) was an American inventor and a pioneering builder of early automobiles and motorcycles from Boston, Massachusetts.
Boston, Massachusetts