I've been to Steve's website and he has a lot of great paintings, but it doesn't appear that he sells the WnWs paintings. I'm sure Steve doesn't own the rights to do that since he's sold them to WnW. From my days as an illustrator, the client buys the rights to print your artwork in one specific useage, unless they do a complete buyout. I'll send out a few emails and see if I get a response.
George