This work provides detailed but succinct information concerning nearly 10,000 directories. Arranged alphabetically by subject, it describes each title briefly, giving the length, price, frequency, and available formats. Directories that appear as special issues of periodicals are also included. Limited international listings follow the U.S. titles. Contact information includes postal, e-mail, and Web Site addresses; phone and fax numbers; and the availability of mailing lists. Where appropriate, subject areas are arranged by state, a feature that is particularly useful in the education section.