I'm looking for a single place where I can find a comprehensive list of all the major futures contracts (not just index futures) along with some of their principal characteristics, such as contract size, margins required, type of delivery, etc. I know I can pull all this info together from the exchanges, or individual brokerage links, and I will if I have to. But I'm hoping there's a spreadsheet or a table out there somewhere with all this info already in it. Anybody know of one? Thanks.