美國國會國家人物傳記大辭典中的傳記 由華盛頓郵報維護的投票記錄 智慧投票计划中的傳記、投票紀錄及利益集團評級 Congressional profile at GovTrack Congressional profile at OpenCongress Issue positions and quotes
ISBN 0195058356. Martin, Fenton S.; Goehlert, Robert U. The U.S. Supreme Court: A Bibliography. Washington, D.C.: Congressional Quarterly Books. 1990. ISBN 0871875543
National Atlas Printable District Maps Jeffrey B. Lewis; et al. Digital Boundary Definitions of United States Congressional Districts, 1789–2012. University