Which edition(s) of D&D is the Caverns of Thracia (1979) compatible with?


I am interested in running an open table along the same lines described by this Alexandrian post and I want to use the original Judges Guild Caverns of Thracia.

I can find a compatible OSR game I’m sure (I want something that has a free PDF rulebook and super-quick character creation, to suit having casual players at an open table), but I need to know what edition of D&D I’m looking for a match with. What edition of D&D was Caverns of Thracia written for and is compatible with?