Steve Kelso has not released new material for many years. He was originally a Colt Studios star but eventually went out on his own. He was/is one of my favorites of all time and as far as I know he never did anything except solo shots. I don't remember him ever doing anything other than still shots. You should still be able to buy his calendars, etc, through COlt Studios.
I met him a couple of times. He isn't as big (body, not dick)as I expected. He is probably 5'7" and weighs maybe 165#. He wasn't nude when I was with him. The most mesmerizing thing about him was his eyes. And, he promised that they were his real color, not the result of colored contacts!