I was looking again at Frank Frazetta's covers for the first three Molly Hatchet albums (in 1978, 1979, and 1980), that were all Robert E. Howard Conan paperback covers for re-releases in the 1960's and 1970's.
First there was Frazetta's "Death Dealer" cover, used for Molly Hatchet's 1978 first album.
Then the cover for "Flirtin' With Disaster" in 1979 (The Frazetta poster version is titled "Dark Kingdom".)
And then another Conan cover re-used on their "Beatin' the Odds" album in 1980. (The Frazetta poster of it is titled "The Berserker") I got a laugh about this artticle I saw, while looking i up : https://gizmodo.com/metallica-conan-the-barbarian-frazetta-art-auction-2000684899 As I discussed wih G-man in a topic a few years back, ours has become a much more expensive hobby. The pages of original art you could own for less than 50 bucks, even Adams, Kirby, or Byrne/Austin X-MEN, often now sell for tens of thoussands, or even millions.
On albums after, Molly Hatchet broadened to a Boris Vallejo cover, a photo cover, and other cover artists, for a total of about 12 albums over almost 50 years. But the time they're loved for are their 70's and 80's music.