It's stuff from Dick Wallens collection Terry, and it was that era...If you go to the utube site here
Open Wheel Tribute - YouTube and read the comments below, there's more info there. My dad knew some of those guy's from back home in Indiana, and I sat in some of those cars at the fairgrounds in Phoenix as a kid. In fact Larson pants me and threw me naked into a pool down on Van Buren where some of the guy's were staying. Don't remember why, but I can guess..LOL
One of these day's I'm going to get you back to the track, but there will never be another Manzy.