Where can we download the price histories for generic xth futures contract for popular commodities such as oil and copper? For example generic 12th or 60th month oil futures (in Bloomberg CL12, CL60) I know we can get the data from the Bloomberg terminal but we cannot afford it as an individual trader. Is there any cheaper way/source where we can download them? (I have IB and TOS but they don't seem to have them so I am looking at third party vendors/public websites.) End of day data for the past 10 years would be sufficient. Thanks.