You Be the Historian http://americanhistory.si.edu/hohr/springer/index.htm Early Adventures with the Automobile www.ibiscom.com/auto.htm Totally Absurd Inventions http://www.totallyabsurd.com/ The History of Invention http://www.cbc.ca/kids/general/the-lab/history-of-invention/default.html American Inventors and Inventions www.150.si.edu/150trav/remember/amerinv.htm