basic information about a wide range of organizations.
This reference database has information and locations on nearly 144,000 nonprofit membership organizations worldwide: International and U.S. National, Regional, State, and Local. It covers everything from local Chambers of Commerce to the American Medical Association, and beyond. Note: In January 1998, the name was changed from Encyclopedia of Associations to Associations Unlimited. Current edition. Updates: Continuous.
The Center for Responsive Politics is the nation's premier research group tracking money in U.S. politics and its effect on elections and public policy. Nonpartisan, independent, and nonprofit, the organization aims to create a more educated voter, an involved citizenry, and a more transparent and responsive government.