Weitere Bezugsquellen für Bücher und Rollenspielprodukte sind die Rollenspiel-Händler Tellurian, NewWorlds,
This boxed set contains the 1979 rules book¸ with a light blue cover. This is the branching point between D&D and AD&D; they would follow different courses later. Elements of both games can be seen in this rules set. A complete set will also contain module B1: In Search of the Unknown. Later printings will have B2 - The Keep on the Borderlands instead.