Encyclopedia

• 1911 Encyclopedia Britannica
  
  Offers the Encyclopedia Britannica 11th Edition, which is now in the public domain. All articles are searchable and alphabetized.
  

  https://encyclopedia.jrank.org/
• Hutchinson Encyclopedia
  
  Users can browse a subset of the Hutchinson Encyclopedia at no charge. Access to the full 75,000 article content requires a subscription.
  

  https://encyclopedia.farlex.com/
• HighBeam Encyclopedia
  
  This free resource offers more than 50,000 frequently updated articles from the Columbia Encyclopedia. Articles are enhanced with links to newspaper and magazine articles as well as pictures and maps.
  

  https://www.encyclopedia.com/
• Encyclopedia of the Nations
  
  The Encyclopedia of the Nations contains brief, detailed information about 193 countries, plus information about the U.N., U.N. Related Agencies, and World Leaders. Searchable by continent and country, or by agency or name.
  

  https://www.nationsencyclopedia.com/
• Encyclopedia Smithsonian
  
  Online education resources from the Smithsonian Institute. Find answers to frequently asked questions from A to Z.
  

  https://www.si.edu/
• World Book Encyclopedia
  
  Online version of the complete reference work plus a dictionary, atlas, historical documents, and multimedia enhancements. Site content is available for use on a subscription basis.
  

  https://www.worldbook.com/
• Encyclopedia of Laser Physics and Technology
  
  Explains terms and principles of laser physics and technology. Contains 529 technical articles.
  

  https://www.rp-photonics.com/encyclopedia.html
• Wikipedia
  
  A free encyclopedia that is being developed and written collaboratively using Wiki software. The site contains over 1,000,000 articles, many of which are well-researched but some of which are inaccurate.
  

  https://en.wikipedia.org/
• Symbols.com
  
  Online encyclopedia of Western signs and ideograms. Visitors can explore these symbols via a graphic index or a word index.
  

  https://www.symbols.com/
• Reference Information Guide
  
  This convenient reference guide features helpful links to online dictionaries, encyclopedias, maps, printable calendars, and more.
  

  https://www.chosensites.com/reference.htm
• Reference for Business
  
  The website contains a number of online encyclopedia sources that can help business owners. These include The Encyclopedia of Small Business, Encyclopedia of Business, Business Biographies, Business Plans, American Industries, Management, Company Histories, and Leading American Businesses. All of these sources can be searched by subject.
  

  https://www.referenceforbusiness.com/
• Thesaurus.com
  
  This is a wonderful website for anyone who loves and uses words. There are links to a visual thesaurus, a written thesaurus, dictionary, encyclopedia, and other tools. The site also contains a translator, an interactive crossword puzzle, and a guide to style, usage, and grammar. Word FAQ's provides information about etymology and other word facts. Users can also sign up to receive a free word-of-the-day via email or Facebook.
  

  https://thesaurus.reference.com/
• American Heart Association
  
  The American Heart Association was formed in 1915 by a group of physicians and social workers. It is a non-profit organization that seeks to build healthier lives free of cardiovascular diseases. The AHA website provides information about heart disease, children's health, lifestyle, how to donate, a heart and stroke encyclopedia, and much more.
  

  https://www.americanheart.org/
• Answers.com
  
  Online dictionary, encyclopedia, and much more. Most of the answers to questions come from Wikipedia so they cannot be considered authoritative without verification.
  

  https://www.answers.com/
• Bartleby.com
  
  Features a collection of online reference works, including a Columbia Encyclopedia edition as well as dictionaries, thesauri, and classic literature. Provides students, researchers, and intellectually curious individuals with access to books and reference information on the web.
  

  https://www.bartleby.com/
• MedlinePlus Health Information
  
  MedlinePlus is a service of the U.S. National Library of Medicine and the National Institutes of Health. This database provides information about health and drugs from the NLM and NIH and other government agencies. The website includes a medical encyclopedia, patient tutorials, latest medical news, and information about clinical trials.
  

  https://www.medlineplus.gov/
• Musicals 101
  
  Subtitled The Cyber Encyclopedia of Musical Theater, TV, and Film, this site includes the history of musicals, reference sources and links, reviews, special courses, and a section on how musicals are made.
  

  https://www.musicals101.com/
• Reference.com
  
  Reference.com is a multi-source dictionary search service provided by Lexico Publishing Group. On it, users can search for words, use a thesaurus, use the encyclopedia, and other tools for free. There are also premium services such as audio pronunciation with the dictionary and word games.
  

  https://www.reference.com/

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