Wal-Mart fights to keep the smiley face http://money.cnn.com/2006/07/05/news/companies/walmart.smileyworld/ The Straight Dope: Who invented the Smiley Face? http://www.straightdope.com/classics/a4_031.html Worcester Historical Museum: Smiley Face http://www.worcesterhistory.org/ex_smiley.html Adflip.com http://www.adflip.com/ United States Patent and Trademark Office Home Page...