Manual of the Planes
1987 (1st Ed.):
2008 (4th Ed.):
(the current edition cover is... OK, but nowhere near 1st edition)
Discussion
Night and day, my goodness.
The 2008 one is dogshit, looks more like Slimer from Ghostbusters:
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LOL yeah was thinking the exact same thing
bargain basement slimer
The art from that whole decade is crap. I think it was also kind of a "low point" for TTRPG's, as the thinking was that we'd all abandon them for World of Warcraft or other online experiences.