Another warm winter and slumping economy put oil in a downward spiral. Would go lower but for Iraq unable to export, Nigerian mess, and Iran/US tensions.
Same question for delayed quotes.
http://tonto.eia.doe.gov/dnav/pet/pet_pri_fut_s1_d.htm
DOE has old futures data.
http://www.nymex.com/index.aspx
for current data.
the DOE data base is downloadable into Excel. But I really miss the proprietary databases we had at big oil/trading houses. It was so easy to chart up relationships.