http://tonto.eia.doe.gov/oog/info/twip/twip.asp U.S. petroleum fuels prices and volumns nationally and by region. en-us http://www.eia.doe.gov/images2/eiasmltitle.gif http://www.eia.doe.gov/ US Energy Information Administration http://tonto.eia.doe.gov/oog/info/twip/twip.asp 2/3/2010 TWIP includes recent analysis of current petroleum issues as well as prices and volumes of major petroleum products. http://tonto.eia.doe.gov/oog/info/twip/twiparch/100203/twipprint.html 2/3/2010 Six weeks ago, the December 23, 2009 issue of This Week in Petroleum focused on the declining trend in gasoline prices from early November through mid-December. However, gasoline prices soon reversed course, and rose more than 16 cents in the following three weeks, before, once again, turning downward. These fluctuations highlight the difficulty of forecasting short run movements, as well as the complexity and occasional unpredictability of petroleum markets.... http://tonto.eia.doe.gov/oog/info/twip/twiparch/twiparch.html Chronological list of TWIP articles.