Premise: Mirage Studios is an independent American comic book company founded in 1983 by Kevin Eastman and Peter Laird in Dover, New Hampshire, and currently based in Northampton, Massachusetts. They are best known for the "Teenage Mutant Ninja Turtles" comic book series and the subsequent franchise it has spawned.
Hypothesis: Mirage Studio was based in a place other than Dover or Northampton at some time.