Reference Books

Encyclopedias, directories, and almanacs provide overviews of interest groups and public policy institutes in the U.S.  Some of these books also provide interest groups' ratings of Congress.

• Almanac of American Politics
  CC Reference JK1010 .B26
• CQ's Politics in America
  CC Ready Reference JK1010 .P64
• Directory of congressional voting scores and interest group ratings / J. Michael Sharp
  CC Reference JK1051.S555 2000 v.1-2
• Encyclopedia of American political parties and elections / Larry J. Sabato, Howard R. Ernst
  CC Reference JK2261 .S218 2006
• Encyclopedia of interest groups and lobbyists in the United States / Immanuel Ness
  CC Reference JK1118 .N47 2000 v. 1-4
• Public interest group profiles
  CC Reference JK1118. P8 2006-7
• Research guide to U.S. and international interest groups / edited by Clive S. Thomas
  CC Reference JK1118.R47 2004
• World encyclopedia of political systems and parties / edited by George E. Delury
  CC Reference JF2011 .W67 1999  vol.1-3