Encyclopedia of Associations - Information about national, international, and local nonprofit and membership organizations. Part of the Gale Directory Library.

Gale Directory of Publications and Broadcast Media - Directory of newspapers, periodicals, radio, television, and cable. Part of the Gale Directory Library.

ReferenceUSA - Find businesses in the U.S. and Canada by name, address, and phone number, as well as by type, size, and location. Find U.S. residences by name, address, or phone number.

Washington Information Directory - A guide to national organizations and government agencies in the Washington area.

Sailor - Directory information about public libraries in the state of Maryland.