Variously referred to as Booklets, Guidelines Booklets, and Initial Guidelines Booklets, the five items in this series were originally produced during 1976-77 to fulfill a game resource "subscription service" that had been promised by Judges Guild at GenCon. The first Booklet was referred to as "I" (for Initial) and the remaining booklets bore subsequent letter codes. These items generally provide basic, initial materials that often were republished later as component parts to better-known, expanded products.
The letter codes generally align, chronologically, with the letter codes used on the earliest issues of The Judges Guild Journal.
JG 03 - Initial Guidelines Booklet I - City State of the Invincible Overlord
JG 16 - Initial Guidelines Booklet J - Thunderhold Castle
JG 20 - Initial Guidelines Booklet K - Haghill
JG 25 - Initial Guidelines Booklet L - Tegel Manor
JG 32 - Initial Guidelines Booklet M - City of Modron