William Harper Jr.

William Harper Jr. was an American pioneer aviator and aviation engineer with the Wright brothers.

Biography
In 1912 he built his own airplane to fly out of Roosevelt Field, New York.

The airplane was a monoplane, resembling the contemporary Blériot, with a span of 50 ft. It was powered by a two-cylinder two-stroke of 50 hp, driving a 9 ft-diameter propeller. It was outfitted with a speedometer and a crude turn-and-bank indicator.

It was reportedly able to glide as much as 300 yd.

It was scheduled to fly in June, from a field east of Mineola, on the Hempstead Plains.

On February 3, 1914, Harper married Florence Tobin of Denver, Colorado in Newport, Rhode Island.