Nice find. It really shows how the originators of D&D just let their imaginations go wild, not fettered by some idea of how a fantasy world "should" be. Early Greyhawk was very much a free-for-all in many ways, and that's how we played it back in the 70's and early 80's. It never took itself too seriously, and that's one of the reasons I prefer that world to the Forgotten Realms. Anything could happen in the lands of Oerth (which Gygax pronounced "Oith" - like one of the Bowery Boys...)