The Chaosium started publishing All the World's Monsters (ATWM) in 1977. It is a compilation of player- & referee-created monsters for OD&D, Arduin, Tunnels & Trolls, and eventually Runequest. Chaosium published three volumes of ATWM in all. Last night, I received a hard bound, single-volume collection of the three ATWM volumes.
Why did I drop this here? ^Arduin, duh! Among the three books, Hargrave submitted more than 80 monsters! Some appeared in the Grimoires, such as the Hell Maidens & Air Sharks. Too, Hargrave collaborators like Clint Bigglestone have entries in these works, which means there might be even more Arduin material in them.
ATWM is a great set of books. It also give a good insight into early D&D and how people were creating content for the game. You can see that the imagination of players was ranging well and ideas were flowing. I would love to have hardcopies.
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