This has been going on for some time without the OSR seeming to take notice ... but Tor books is deep into an appreciation of the Appendix N works from the 1st edition DM Guide, courtesy of Tim Callahan and/or Mordecai Knode.
So far they've hit most of the right switches - correctly placed Vance between Clark Ashton Smith and Gene Wolfe (but missing the Planet of Adventure entirely), nailed down Derleth succinctly as an author and influence on D&D, and dug up hidden gold from obscurities like Fredric Brown.
Check it out.
D&D variant: specialty mages
4 hours ago