Wow RIP Frank. I've been a big fan of his for as long as I can remember. What a huge body of work and an amazing vision of times and worlds of brutal conflict he had. Like mentioned from Conan to Molly Hatchet album covers and everything in between. And Vampirella ... oh my... How many fantasy, sci fi or gaming fans didn't have at least some of his work if not lots of it in their collection at one time or another?
I used to like Vampirella, the large format that publication came in suited his style of artistry. Via Condios FF.