Detailed information on more than 22,500 nonprofit American membership organizations of national scope. Every entry offers a wealth of valuable data, typically including the organization's complete name, address and phone number together with the primary official's name and title; fax number, when available; founding date, purpose, activities and dues; national and international conferences; and more.

This reference covers multinational and national membership organizations from Afghanistan to Zimbabwe - including U.S.-based organizations with a binational or multinational membership. Entries provide the names of directors, executive officers or other personal contacts; telephone, fax, telex, electronic mail, websites and bulletin boards; the group's history, governance, staff, membership, budget and affiliations; the goals and activities of the international organization, including research, awards, certification, education, lobbying and other important activities; and publication and convention information.

detailed and comprehensive information on nonprofit membership organizations. It covers associations and societies that are organized and function at the regional (both interstate and intrastate), state, county, city, neighborhood, and local levels. The geographic scope of each volume takes into account factors such as shared regional characteristics or interests, and geography, allowing users to acquire only those volumes that will meet their information needs.