Kenneth C. Martis is professor of geography at West Virginia University. He is the author of The Historical Atlas of United States Congressional Districts, 1979-1983 (1982), The Historical Atlas of Political Parties in the United States Congress, 1789-1989 (1989), and The Historical Atlas of the Congresses of the Confederate States of America, 1861-1865 (1994). He also is a coauthor of The Historical Atlas of State Power in Congress, 1790-1990 (with Gregory A. Elmes, 1993) and Atlas of American Politics, 1960-2000 (with J. Clark Archer, Stephen J. Lavin, and Fred M. Shelley for CQ Press, 2002).
