Books
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Atlas of the 2012 Elections, eds. Lanham, Maryland: Rowman & Littlefield, 2014. (with J. Clark Archer, Robert H. Watrel, Fiona M. Davidson, Erin H. Fouberg, Richard L. Morrill, Fred M. Shelley, and Gerald R. Webster).
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Atlas of the 2020 Elections, eds. Lanham, Maryland: Rowman & Littlefield, 2022 (with Robert H. Watrel, Kimberly Johnson Maier, Ryan D. Weichelt, Fiona M. Davidson, John J. Heppen, Erin H. Fouberg, J. Clark Archer, Richard L. Morrill, and Fred M. Shelley).
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Atlas of American Politics: 1960-2000. Washington, DC: Congressional Quarterly Press, 2002. (with J. Clark Archer, Stephen J. Lavin, Fred M. Shelley).
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The Historical Atlas of the Congresses of the Confederate States of America: 1861-1865. New York: Simon and Schuster, 1994. (with Gyula Pauer – Cartographer and R. Reed Durbin – Research Assistant).
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The Historical Atlas of United States Congressional Districts: 1789-1983. New York: The Free Press, 1982. (with Ruth A. Rowles – Cartographer).
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Historical Atlas of U. S. Presidential Elections: 1788-2004. Washington, DC: Congressional Quarterly Press, 2006. (with J. Clark Archer, Stephen J. Lavin, Fred M. Shelley).
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The Historical Atlas of Political Parties in the United States Congress: 1789-1989. New York: Macmillan, 1989. (with Ruth A. Rowles and Gyula Pauer – Cartographers).
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Atlas of the 2016 Elections, eds. Lanham, Maryland: Rowman & Littlefield, 2018. (with J. Clark Archer, Robert H. Watrel, Fiona M. Davidson, Erin H. Fouberg, John J. Heppen, Richard L. Morrill, Fred M. Shelley, and Ryan D. Weichelt).
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The Historical Atlas of State Power in Congress: 1790-1990. Washington, DC: Congressional Quarterly Press, 1993. (with Gregory A. Elmes).