Apparently not satisfied with the cameos he gave these two in The Rocketeer (and shame on you if you didn’t spot them!), Dave Stevens provided this cover for The Shadow and Doc Savage #1 (1995).

Famous Monsters #147 (1978)
Cover by Basil Gogos

Cover Turning Tide I Liberation War Book 6 by LordDoomhammer on DeviantArt

Stephen Hickman – Gryphon, paperback cover (1990)