cover art by neal adams (unsigned, credited in at least some printings)
this cover art used from 4/1975 8th 345-24160-6 through 12/1982 17th 0-345-28996-X & 3/1989 24th 0-345-31575-8 printings (mis-credited in this latter to charles ren);
18th & 19th printings use cover art by charles ren (credited), in different cover design setting.