Delaware County: Where Pennsylvania Began

Delaware County is part of the densely populated belt around Philadelphia, stretching from the city’s western boundary to the circular Delaware state line. Covering approx¬≠imately 185 square miles, it is the third smallest Pennsylvania county yet the fourth largest in population. Its southern boundary is formed by the Delaware River, from which the county takes its name. The site of early...
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P-V Engineering Forum Helicopter

Few may realize it, but fifty years ago eastern Pennsylvania’s Delaware Valley played host to the development of rotor winged aircraft – known to most as the helicopter. The area’s technological base and talent were incomparable, and world-famous aviation pioneer Igor I. Siko¬≠rsky (1889-1972), whose model VS-300 was the western hemisphere’s first practical helicopter,...
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