The young Waldo Waterman with his biplane, photographed in 1911. He was one of the few early designer/builders to go on to be successful in the years following World War One. The unidentified engine appears to be a 4-cyl upright in-line with left hand tractor propeller.

Самолёты на фотографии: Aircrafts on the photo: Waterman Model of 1911 y. - СШАUSA - 1911

Professor J F Zerbe s 1909 multiplane had six symmetrical aerofoil planes, each staggered to form slots with the preceding plane, although the sixth may have been a form of elevator. It had a wheel control and was said to have a motorcycle engine driving a rear wheel as well as a propeller, but this is difficult to see in the only known photograph. It failed to get off the ground at Dominguez but Zerbe built a staggered-wing quadriplane in 1919 with a box-like cabin which he called the Zerbe Air Sedan. This had a Le Rhone rotary engine in the nose but although it was claimed to have lifted off to about 100 ft on its only attempted flight, the undercarriage was damaged and nothing more was heard of it.

Самолёты на фотографии: Aircrafts on the photo: Zerbe Sextuplane - СШАUSA - 1909

G H Loose designed a monoplane with a central engine driving two tractor propellers on outriggers. Its gull wing was indicative of the view of many designers of the period that the answer to successful flight was to copy the wings of birds - hence the use of the term 'ornithopter'. Though workable, this idea was a blind alley that failed to lead Loose and others into producing a practical flying machine.

Самолёты на фотографии: Aircrafts on the photo: Loose monoplane - СШАUSA - 1910