Thanx to Lee Vodden's Facebook page.
http://www.criticalpast.com/video/65675072676_Gilmore-Stock-Car-Race_Ford-V-8-car_Stubby-Stubblefield_officials-pose
That is a great video. I believe the correct location is Mines Field, known today as Los Angeles International Airport.
Friend Lee Vodden on facebook (aka Ray) he posts a lot of cool stuff.