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  • Carranza, F. A. "The Discovery of Anesthesia: The Tragic History of Wells and Morton." University of California Los Angeles. (Jan. 27, 2012) http://www.dentistry.ucla.edu/pic/members/carranza/anesthesia.html
  • Computer History Museum. "The Babbage Engine." 2008. (Jan. 27, 2012) http://www.computerhistory.org/babbage/
  • Dwyer, Frank Lewis. "Edison: His Life and Inventions." Kessinger Publishing. (Jan. 27, 2012) http://books.google.com/books?id=mD4-fWOs1MkC&q
  • Exploratorium. "The Wheel." (Jan. 27, 2012) http://www.exploratorium.edu/cycling/wheel1.html
  • Hardy, Rob. "Ether Day: The Strange Tale of America's Greatest Medical Discovery and the Haunted Men Who Made It." The American Journal of Psychiatry. Dec. 1, 2001. (Jan. 27, 2012) http://ajp.psychiatryonline.org/article.aspx?Volume=158&page=2103&journalID=13
  • Library of Congress. "The History of the Edison Cylinder Phonograph." (Jan. 27, 2012) http://memory.loc.gov/ammem/edhtml/edcyldr.html
  • Massachusetts Institute of Technology. "Inventor of the Week: Charles Goodyear." (Jan. 27, 2012) http://web.mit.edu/invent/iow/goodyear.html
  • Massachusetts Institute of Technology. "Inventor of the Week: John Dunlop." 2008. (Jan. 27, 2012) http://web.mit.edu/invent/iow/dunlop.html
  • Massachusetts Institute of Technology. "Inventor of the Week: Thomas Alva Edison." (Jan. 27, 2012) http://web.mit.edu/invent/iow/edison.html
  • National Museum of American History. "The Development of the Bicycle." (Jan. 27, 2012) http://americanhistory.si.edu/onthemove/themes/story_69_2.html
  • National Park Service. "Thomas Edison: Frequently Asked Questions." Nov. 5, 2011. (Jan. 27, 2012) http://www.nps.gov/edis/faqs.htm
  • Peckham, Matt. "Who Really Invented the Computer." Time Techland. Nov. 10, 2011. (Jan. 27, 2012) http://techland.time.com/2011/11/10/who-really-invented-the-computer/
  • The Science Museum. "Babbage." (Jan. 27, 2012) http://www.sciencemuseum.org.uk/onlinestuff/stories/babbage.aspx
  • Thomas, Roger K. "Crawford W. Long's Discovery of Anesthetic Ether: Mesmerism, Delayed Publication, and the Historical Record." 2003. (Jan. 27, 2012) http://rkthomas.myweb.uga.edu/LongSSPP.htm
  • University of California Los Angeles. "From the Amazon to the Indianapolis 500." (Jan. 27, 2012) http://www.botgard.ucla.edu/html/botanytextbooks/economicbotany/Naturalrubber/index.html