Davidson, Roger H. Congress and its members / Roger H. Davidson, Walter J. Oleszek. - 10th ed. - Washington, D.C. : CQ Press, c2006. - xxi, 496, [89] p. : ill., maps ; 23 cm. Includes bibliographical references and index. ISBN: 1568029357 (pbk.) Subjects--Corporate Names: United States. Congress. Subjects--Topical Terms: Legislators--United States. Dewey Class. No.: 328.73 / DAV