Judges Guild was one of the other early publishers of role-playing game materials, after TSR, the first and most initially successful of the early publishers, which published Dungeons & Dragons. Founded in 1976, Judges Guild sought permission from then-fledgling TSR to publish supplemental material, in the form of adventure modules, maps, and other material. Dave Arneson, one of the founders of TSR, initially gave Judges Guild a verbal agreement to publish this material, but the firms eventually tightened up this arrangement. Judges Guild was slow to modernize during the early 1980s, remaining committed to earlier dungeon fantasy games without the increasing realism that other makers then offered. The Judges Guild D&D Initial Guidelines Booklet 1, from 1976, is one of the early supplemental materials the firm sold. This particular copy belonged to Dave Arneson.