In 1985, just before Gary Gygax was forced out of TSR, he wrote the first two Gord the Rogue novels, which provide many interesting details of the city of Greyhawk and its seamy underworld.
The following year, in conjunction with this boxed set, TSR published a trilogy of adventure modules by Richard & Anne Brown -WGA1 Falcon's Revenge, WGA2 Falconmaster and WGA3 Flames of the Falcon-set in the city and centred around a mysterious villain called "The Falcon." .