Gale Directory Library (formerly Associations Unlimited) This link opens in a new windowUse this database to locate more than 456,000 international and U.S. national, regional, state, and local nonprofit membership organizations in all fields, and access IRS data on U.S. 501(c) nonprofit organizations. Also useful for monitoring association trends, identifying related associations, networking and making professional contacts, identifying award and funding opportunities, and marketing to associations, their members and markets. Includes these directories: Encyclopedia of Associations: International Organizations; Encyclopedia of Associations: National Organizations of the U.S.; Encyclopedia of Associations: Regional, State and Local Organizations; and National Directory of Nonprofit Associations.