I drew a picture on the back of a calendar in pencil. In those days they used to give out free calendars, I had no art paper, so I took whatever else I could.

Jerry often says that Slam Bradley was really the forerunner of Superman, because we turned it out with no restrictions, complete freedom to do what we wanted; the only problem was that we had a deadline.

And I agreed the feeling of action as he was flying or jumping or leaping - a flowing cape would give it movement. It really helped, and it was very easy to draw.

Jerry picked up the technique of visualizing the story as a movie scenario; and whenever he gave me a script, I would see it as a screenplay. That was the technique that Jerry used, and I just picked it up.

We drew a circle that took him in.

I had pencil and paper ready and put my hand out to sign,