Clarkson, MarylandClarkson is an unincorporated community in Howard County, Maryland, United States. A postal office operated in the community from September 14, 1889, to October 31, 1931.[1][2][3] Clarkson was the site of strategic simulations by the U.S. Army in 1922 training manuals.[4] 39°17′53″N 76°56′08″W / 39.29806°N 76.93556°W[5] See alsoReferences
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