photo301: Hello,
This is Jack Vogt's son, he purchased Muse Software from Silas Warner while it was in Bankruptcy during the mid to late 80's and has owned the rights to all the Muse games.
It is a great lucky coincidence to see you here! I have a question personally for you. As GoodGuyA mentioned earlier, it seems that Wolfenstein is in a weird copyright limbo and there is no clear information anywhere. I'm trying to track down its fate step by step...
So here is what I have. At the Kansasfest in 1992 Silas Warner mentioned that after the bancruptcy all asssets of Muse Software went to a jobber Jerry Herskowitz. The company field Chapter 7 in 1985. Final company bancruptcy was in 1987. Your father (Jack L. Vogt) mantioned in comment under the Silas' necrologue that he purchased the company in 1988 from Variety Discounters Company (owned by Jerry Herskowitz). It included name, trademark, copyrights to all of its many games, educational, and productivity software, source codes, original art work, and all inventory. It means that your father was the exclusive owner of all rights on Wolfenstein franchise at that moment. In 1992 Wolfenstein 3D was released. In interview with id Software for Game Bytes Magazine from August 1992 the guys mentioned that they "legal dudes got the rights from old lady in Michigan". Also in another article I found an information that the rights was bought from broker for $5,000. As you can see, there is some inconsistency in all this story. May be you can add any comments to it to fulfill these blanks...