I recently picked this up and it's pretty fucking good..
Date: August 6, 1978
Location: Oklahoma City, OK
Venue: State Fair Grandstand @ Oklahoma State Fairgrounds
Bands On the Bill (In Approximate Running Order): Wet Willie, Van Halen, U.K., Rick Derringer, Montrose, Missouri, Head East, Black Oak Arkansas, Climax Blues Band, Alvin Lee Tour: Van Halen