A motorcycle inventor and motorcycle mailbox

A steam velocipede built by inventor Sylvester H. Roper in 1857 may be the earliest known motorcycle. The coal fire steam engine unit is a part of a specially built chassis than an add-on and had no pedal crank. While Roper's two-wheeled inventions never found commercial success, his innovations provided inspiration and direction for inventors in the gas-powered motorbike ear at the turn of the century. Significant later were invented other products. such as a motorcycle mailbox, that can be associated with motorcycles.