Mordenkainen's Fantastic Adventure
Robert J. Kuntz & Gary Gygax
Greyhawk
Gary Gygax & Robert J. Kuntz
Gods, Demigods, & Heroes
Robert J. Kuntz & James M. Ward
Dieties & Demigods (with Cthulhu)
James M. Ward & Robert J. Kuntz
Deities And Demigods