It's true that hardware engineering and manufacturing were in Chippewa Falls, Wisconsin, while the corporate HQ and software people were various suburbs of Minneapolis, Minnesota (first Bloomington, then Mendota Heights and downtown Minneapolis, then Eagan, then back to Mendota Heights, &c...). But that's mostly because Control Data had set Seymour up with a lab in Chippewa Falls, and he just stayed in place in '72 when he quit.