| Wikipedia http://en.wikipedia.org/wiki/George_Washington_Carver |
| Inventors on About.com http://inventors.about.com/library/weekly/aa041897.htm |
National Parks Service |
| Garden of Praise http://gardenofpraise.com/ibdcarve.htm |
| Hall of Fame - Inventor Profile http://www.invent.org/hall_of_fame/30.html |
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Retrieved October 27, 2008 from http://en.wikipedia.org/wiki/George_Washington_Carver