WTB! If you are going to do a jam book, I would not suggest a 1972 Swamp Thing #1. Two reasons, (1) That cover has a beautiful ST image that would be obliterated by the sigs (2) some people will not sign books that they did not work on, and you run the risk of not getting the sigs you want. I would suggest one of two things - either get a Swamp Thing blank and work with that, or get one of the Swamp Thing movie comics. With either of those, you can talk to the creators about it being a jam homage, and they may sign it even though they didn't work on it. Just food for thought . . .