I believe this may be the PNW "contingent" at the Sacramento Champ car race circa 1960. The nearest car appears to be the Vollstead built Jewett/Cameron Spl. with Ernie Koch up. The middle car is the Central Excavating Spl. with Len Sutton up and the 65 is the Scovell Spl. with Bill Hyde up.
Thanks SWI66 for the 59 Cadillac pics. 59 Cads are absolutely my favorite stock car. Addicted my wife claims! Lol 1 more car I promise, Rex Winter Dry n windy Lubbock TX
Rootie, thanks for the ID on the Champ Cars. The #7 Super is quite similar to Hank Arnold's Twister, or Johnny Capels car.