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Congress. (原始内容存档于2014-12-17). Summers, Lewis Preston. History of SouthwestVirginia 1746–1786, Washington County 1777–1870. Baltimore, Maryland: Regional
hammack@roanoke.com 981-3239, Laurence Hammack. Coming soon: New area code for SouthwestVirginia. Roanoke Times. [2020-06-19]. (原始内容存档于2020-06-17) (英语). New area