• Coins Facts
  Online Reference for U.S. Coins
  Coin information free to all collectors of United States coins, including thousands of full color coin images, rarity, and historical information
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• Dictionary Link
  Free Online Dictionary, Translation and Reference Services
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• Free Library
  News, Magazines, Newspapers, Journals, Reference Articles, Classic Books
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• Infoplease
  Encyclopedia, Almanac, Atlas
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• Internet Public Library
  Reference, Dictionary, Encyclopedia, Kidspace, Teenspace
  ipl2: Information You Can Trust features a searchable, subject-categorized directory of authoritative websites; links to online texts, newspapers, and magazines; and the Ask an ipl2 Librarian online reference service.
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• Kids Space
  Reference, World, Computers, Health, Reading, Math & Science
  ipl2: Information You Can Trust features a searchable, subject-categorized directory of authoritative websites; links to online texts, newspapers, and magazines; and the Ask an ipl2 Librarian online reference service.
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• Multi-source Dictionary Search Service
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• RefDesk
  Reference, Facts, News – Free and Family Friendly Resources
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• Reference
  Almanac, Atlas, Dictionary, Web Directory
  Reference.com - a free online encyclopedia and information reference. Research articles from Columbia Encyclopedia and Encyclopedia Britannica.
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• Reference at Internet Public Library
  Basic research tools such as almanacs, dictionaries and encyclopedias
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• Reference Hotlist
  Websites
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• Smithsonian Institute
  
  The world's largest museum and research complex, with 19 museums, 9 research centers and more than 140 affiliate museums around the world.
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• Virtual Reference Shelf
  Web Resources compiled by the Library of Congress
  Ask a librarian: An online reference service from the Library of Congress that allows researchers to submit reference questions to Library of Congress reading rooms and receive expert research assistance (within 5 business days.)
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