EDIT: I got these all. No longer needed.

522 Teenage Crimewave
The Day The World Ended (The Home Game: 01/25/1997)
World Without End (Performed Live)

From the super-completist MST3K trader I got all my rare bits and pieces from, there's no copy, excellent or otherwise, of World Without End.

There might not be a complete version of WWE, but several sellers sell a truncated version of the live Mystied performance of "World Without End." I traded for a copy.