This was the WWF/WWWF's first,nationally,syndicated wrestling program.Hosted by Vince McMahon and Bruno Sammartino(later Pat Patterson,then Gene Okerlund),the show ran from 1978-1986.It was replaced by WWF"Superstars".
WrestleMania is a professional wrestling event produced annually every year by the WWE.
SummerSlam is a professional PPV event, produced annual by the WWE every August since 1988.