I never played the Marvel TSR game, but I did do the D&D thing. There was an Alpha Flight module published by TSR and here is the cover art by John Byrne: It's a big picture:

http://jbgallery.ourbunch.net/marvel...es/CatsPaw.jpg

And there's also this thing, sort of an article about the Cat's Paw:

http://www.marvelrpg.net/mp/dm97mp.pdf

with more Byrne art.

Love,
rplass