Search - Lookup - Top of the WebLook up specific facts or pieces of information; includes professionally-edited and maintained reference works like dictionaries, almanacs, and ready reference collections; see also people locating resources, keyword resources, and subject resources
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- Infoplease: Look up almost any fact; an integrated dictionary, encyclopedia, almanac, biographies, and atlas; Information Please's history goes back to a 1938 radio quiz show, an annual almanac starting in 1947; and a Web site since 1998
- Melissa: Melissa Data Free Online Lookups; free address and ZIP Code-related information lookup services from Melissa Data, a mailing lists, software, and data company; provides a clean, usable interface to a range of free lookup services that could save you hours of time; find campaign contributors, nonprofit organizations, occupants by zip code, business counts by SIC code, income by zip code, US and worldwide place names, etc.
- WolframAlpha: Knowledge engine (facts computation, statistics, calculator); pulls together facts from a variety of sources; for example: find the population of Boston, the square root of pi, the diameter of Neptune, winner of the 1896 Olympic men's marathon, the King of Spain
- Refdesk: reference portal; large collection of links that guide you to a wide variety of reference and information sources on the Web; so massive that it nearly is a subject tree of Web resources itself; edited by Bob Drudge, father of Matt Drudge (Drudge Report)