They did changed designs a bit every season, but I think the first season of TAS and the one from JLU are the most defnitive versions of that particular universe.

I have one in my Behance, not sure if you can read it though. It's hard to release a high-res image all over the net, you'll end up seeing it in ebay…

You know? I think those guys had a more distinctive stylem Colan and Aparo based their Bat-Art in Adams and I don't think they influenced Batman's visuals as much as either Adams or Rogers. They had long runs but were mainly "steady as she goes" artists. Not to take anything aways from them, obviously.