I'm guessing that when you say Emperor Doom, you are talking about the story where Victor is on Earth 2 and conquers the planet then decides to come back to Earth 1? Because I have that in trade form which is just simply called "Doom" by Dixon. Other than that, I would HIGHLY recommend the following:
Books of Doom by Brubaker
Doctor Strange & Doctor Doom: Triumph and Torment (hard to find-got mine on eBay)
Fantastic Four #247
Marvel 1602-the first one and the FF sequel
Iron Man: Doomquest and Legacy of Doom
Black Panther: Doomwar
Fantastic Four: WOrld's greatest trade then Master of Doom trade
Fantastic Four: The beginning of the End
Fantastic Four: The ENd
and Don't you DARE mention Waid's name in my presence....What he did to Doom's character was quote "unthinkable".
happy reading
