Papers, 1750-1815.
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Mason, Charles, 1728-1786
http://n2t.net/ark:/99166/w6697655 (person)
Charles Mason was an astronomer and surveyor. He was elected to the American Philosophical Society in 1768. From the description of Journal during the survey of the Pennsylvania-Maryland line, 1763-1768. (American Philosophical Society Library). WorldCat record id: 122316422 From the description of Papers, 1750-1815. (American Philosophical Society Library). WorldCat record id: 122380135 From the guide to the Charles Mason papers, 1750-1815, 1750-1815, (American Phi...