TSR, Inc. obtained permission from Michael Moorcock for inclusion of the Melnibonéan material (from his "Elric" series of books), and the Cthulhu Mythos was included in the public domain, so TSR assumed they could legally use it without any special permission.
Inc. obtained permission from Michael Moorcock for inclusion of the Melnibonéan material (from his "Elric" series of books). This was tsr. The Cthulhu Mythos was included in the public domain. This was tsr. They could legally use it without any special permission. This was what TSR assumed.