http://en.wikipedia.org/wiki/United_States_twenty-dollar_bill

http://money.cnn.com/2003/05/13/news/economy/twenty/index.htm

http://www.moneyfactory.gov/newmoney/

http://www.illuminati-news.com/20-dollar-bill.htm

http://www.prisonplanet.com/022904rfidtagsexplode.html

http://www.linkydinky.com/20billsecrets.shtml

http://en.wikipedia.org/wiki/Canadian_twenty-dollar_bill

http://www.foldmoney.com/

http://www.factmonster.com/ipka/A0908281.html

http://www.happynews.com/living/money/fake-twenty-bill.htm

http://www.snopes.com/rumors/20bill.asp

http://www.allbrevard.net/

http://www.ncua.gov/letters/1998/98-cu-18.pdf

http://www.metacafe.com/watch/28426/amazing_20_bill_9_11_coincidence/

http://www.conspiracies.net/

http://www.infoplease.com/ipa/A0908281.html

http://money.cnn.com/2003/03/05/news/money/index.htm

http://www.accessmylibrary.com/coms2/summary_0286-24351697_ITM

http://www.itestcash.com/top-ten-ways-detect-counterfeit.html

http://commons.wikimedia.org/wiki/United_States_dollar