DEEP Jam. 1974

California Jam, also known as Cal Jam, was a rock music festival co headlined by Deep Purple and Emerson, Lake Palmer and held at the Ontario Motor Speedway in Ontario, California, USA, on April 6, 1974. It was produced by ABC Entertainment, Sandy Feldman and Leonard Pacific Presentations, a Los Angelesbased concert company headed by Sepp Donahower and Gary Perkins, coordinated the event, booked all the talent and ran the advertising. Don Branker2 worked for Leonard Stogel and was responsib