As Kurt Toy himself pointed out three years ago, In 1945 WCAE went from Mutual to Blue-ABC and KQV went from Blue to Mutual then, exactly eight years later, KQV dumped Mutual to affiliate with CBS, causing longtime CBS outlet WJAS to go to Mutual. Some years later, of course, KQV became an ABC O&O. At some point after all of this, the CBS affiliation went to WEDO-810 in McKeesport, though I'm not sure of that timetable.