"In 1884 or 1885 Lucius D. Copeland equipped one of these Stars with a small steam engine and a boiler, and successfully operated the machine. Two or three years later a tricycle (pl. 4, b) was similarly equipped for Copeland by the Northrop Manufacturing Co. ...[T]hese machines appeared in many engineering magazines ...and Sandford Northrop issued advertising brochures publicizing ...his Moto-cycle Manufacturing Co., but the venture proceeded no further ...one of ...many... attempts ...to produce a commercially successful self-propelled vehicle."