http://en.wikipedia.org/wiki/Economic_indicator     

http://www.investopedia.com/university/releases/

http://economics.about.com/cs/businesscycles/a/economic_ind.htm   

http://www.economicindicators.gov/          Gross Domestic Products

http://www.census.gov/cgi-bin/briefroom/BriefRm  

http://money.cnn.com/2010/06/01/news/economy/economic_indicator.fortune/   

http://www.bls.gov/bls/newsrels.htm

http://www.bea.gov/  

http://www.conference-board.org/economics/database.cfm#1