He was mostly leaping tall buildings in the beginning. There were cases where he would leap off a tall building or swoop down, and at that point he would look like he was flying, I suppose. It was just natural to draw him like that.

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.

Those early sketches looked too cartoony; I really wanted to do detailed drawings - I was taking anatomy classes - but unfortunately I wasn't able to do it because of the time element.