From Popular Mechanics, June 1954:
Of all the tilting-rotor-type designs, one of the most unique comes from California. At North American Aviation (which hasn't anything to do with the project), research engineer Frank A. Dobson and some fellow workers have developed a mosquitolike little delta-wing craft with two vertical fins and a pair of 16-foot three-bladed, contrarotating propellers on a single hub that juts from the nose. In this position, the tiny craft is a fast-flying (187 miles per hour) triangular affair powered by twin McCulloch engines whipping up 70 horsepower each. The plane carries two passengers and Dobson envisions it as a back-yard family craft or a military liaison vehicle.
When Pop climbs in to take off, the craft sits on a pair of skids under its low aft end and swivel wheels under the nose. The hinged nose shaft is pointed skyward, with stacked rotors whirling in opposite directions. If Junior is hopping around, the thing won't take off but will pivot around on its skids until he climbs into the seat and the center of gravity is established beneath the rotor. Then, up she goes, nose high, like a helicopter. At proper altitude, the nose hub goes down and the craft zooms away at a 170-mile-per-hour cruising speed. To land, the process is reversed, and the craft helicopters to earth at a maximum forward air speed of 20 miles per hour.
At last report, Dobson and his friends were building a prototype. If it is successful, he expects to try a military type of jet machine that he believes will do 700 miles per hour.