Collection of art prints, the subject of which is California history. These were sold around 1969-1970 as a promotional campaign with Chevron and Standard Oil. "Every week at all Chevron Dealers and Standard Stations you'll receive a new set of prints (with purhcas). By the end of the summer you'll own a fully documented history of California - 42 scenes in all. Enlarements are also available to highlight your collection."