I want to profusely thank Emperors Choice for participating in Tenkar's 12 Days of OSR Christmas event. I was fortunate to win one of their sets of Volumes IV to IX, which completes my trilogy of trilogies.
I've had the first three (in later prints) for more than 25 years, plus The Howling Tower, a much-used copy that Crazy Egor warned -- "How crappy can you get. One of the rarest items ever and it wasn't just used, it was abused inside. Writing all over in pencil, ink cross outs all over. OK, play it but don't destroy it!" Still playable, though... otherwise I would not have been able to afford it!
I also have the Arduin map, bought some years ago at Gen Con; such a gorgeous map!
I have spent the last four days poring over the new acquisitions and going over the first three grimoires and scanning the map.
What a wonderful, fascinating world! A true wacky, wahoo, classic!
I am planning to order World Book of Khaas: Legendary Lands of Arduin and Vaults of the Weaver next week to finish the collection. I plan on adapting the material to Labyrinth Lord (BX/AD&D) and running it after my current 5E Temple of Elemental Evil campaign finishes... or maybe concurrently, if I can get another group together.
I look forward to further developments in the world of Arduin!