Me too :) I remember our first dungeon, green slime everywhere. There was no monster manual in those days, just Monsters & Treasure Volume 2 of Three Booklets. Many years later, when I first heard about the Grassy Knoll, all I could think of was "Gnolls: A cross between Gnomes and Trolls (. . .perhaps, Lord Sunsany did not really make it all that clear) with +2 morale."