Virginia's 20th congressional district

• Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
• Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
• Congressional Biographical Directory of the United States 1774–present Archived April 23, 2010, at the Wayback Machine

39°0′N 80°20′W / 39.000°N 80.333°W / 39.000; -80.333

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