I just listened to Robert E. Howard's The Tower of the Elephant on Podcastle, and it is fucking great. So now I need to circle back and read more Conan stuff.
I am going back and picking up a lot of the fantasy classics that I missed back in the day. Elric, Fritz Leiber, etc. Its really fun, especially as I am steeped in D&D lore, and reading this stuff you can see EXACTLY where Gygax got the idea for this spell, or that magic item. For instance, I always wondered about the Trap the Soul spell - why so specific about its affects? Why did it need a Gem? Well, much of the lore surrounding the spell details comes right out of The Tower of the Elephant.