Forgotten Realms
The "Campaign Set" (often referred to as the "Grey Box") was later released in 1987 as a boxed set of two source books ("Cyclopedia of the Realms" and "DM's Sourcebook of the Realms") and four large maps, designed by Greenwood in collaboration with author Jeff Grubb. The set introduced the campaign setting and explained how to use it, and reserved space on the map for SSI's Gold Box computer role-playing games set in the Forgotten Realms.
Ed Greenwood
The campaign setting was a major success, and Greenwood continued to be involved with all subsequent incarnations of the Forgotten Realms in "D&D". He retained the rights to his fictional universe and went on to write numerous Forgotten Realms novels. Many of these center around the wizard Elminster, whom Greenwood has frequently portrayed at conventions and gaming events.