Chicago Tribune article - "Summer Heats Up Natural Gas Prices" - May 29, 2003 

Www.EnergyPulse.Com - "Natural Gas Supply, Demand and Pricing" - May 9, 2003 

Chicago Tribune article - "Low Gas Stores May Heat Winter's Prices" - April 28, 2003 

Chicago Tribune article - "Energy Prices a Drain on the Economy" - April 8, 2003 

Chicago Tribune article - "CUB: Halt Natural Gas Spikes" - March 12, 2003 

Chicago Tribune article - "Natural Gas Rates Taking Off" - March 4, 2003