Directories

800 Numbers

• Toll Free: the Internet 800 Directory

Discussion Groups and Listservs

• CataList: the Official Catalog of Listserv Lists
• Tile.net/Lists

General Directories

• AnyWho [AT&T]
• Bigfoot
• Infobel [worldwide telephone directories on the WWW]
• InfoSpace
• Dex
  A comprehensive resource for business information and residential White Pages listings within the United States.
• Switchboard
  Directory of business and residential phone numbers, email and web sites. A "free nationwide residential and business directory." Besides containing address and phone information, e-mail addresses are included for registered users.
• The Ultimates
  Cross searching of 25 net services. White pages, yellow pages, and e-mail.
• WhoWhere? [Lycos]
• WorldPages
  Yellow pages, white pages, email, government, toll-free.
• Yahoo! People Search

Lawyers and Law Firms

• AttorneyFind
• Find a Lawyer [FindLaw]
• Law Firms [WashLaw Web]
• Martindale-Hubbell Lawyer Locator

Libraries

• LibDex: Library Index
• Lib-web-cats: A Directory of Libraries Throughout the World
• Locate a Federal Depository Library
• OCLC Participating Institutions

Medicine and Sciences

• AMA Physician Select
• American Board of Medical Specialties Certified Doctor Locator Service

Parks

• National Park Guide [National Park Service]
• Park Search
  Search for nearly 900 national parks and forests, state parks and other great outdoor locales across the U.S.

Universities and Colleges

• Thomas Register of American