Hello, I am looking for back-adjusted daily datas for the 1st( nearby ), 2nd and 3 rd back months on soft commodities, especially CBOT( also interested in NYBOT and CME ). The longer the best. The adjustment can be made by absolute difference or ratio, it doesn't matter. I have looked at a lot of common free historical database, but they don't offer back months. Do you know where I can find these kind of datas? I don't need upper quality so I prefer free datas, but if some cheap datas exist... Thanks for your help.