Johnsville Naval Air Development Center
This site was acquired by the U.S. Navy during World War II from the Brewster Aircraft Corporation; it served as a strategic locale for weapons development and testing of modern aircraft. Later, it was a training facility for America's Mercury, Gemini, and Apollo space programs.
University Library, Vrije Universiteit AmsterdamDavid Rumsey Map Collection, Stanford LibrariesDigital Commonwealth, Boston Public LibraryDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford Libraries
Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov
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