The 1937 Richfield Oil context
Richfield Oil — the company that built the Cucamonga station — was one of the dominant West Coast petroleum companies of the mid-20th century, with a substantial chain of branded service stations across California, Arizona, Nevada, and the Pacific Northwest. The company merged with Atlantic Refining in 1966 to form ARCO (Atlantic Richfield Company), which is why most surviving Richfield-era stations across the West later carried ARCO branding before eventually being decommissioned or rebranded again. The Cucamonga station's 1937 construction puts it solidly in the original Richfield era — about 30 years before the ARCO merger and roughly a decade after Route 66 was designated.
The choice of Streamline Moderne for the Cucamonga station reflected Richfield's broader 1930s branding strategy, which emphasized modern, forward-looking station design as a marketing differentiator from older Standard Oil and Shell stations that still used Victorian or Mission Revival aesthetics. Richfield commissioned a small architectural firm to develop a standardized Streamline Moderne station template that could be deployed across the company's expanding California chain; the Cucamonga station is one of the better-preserved examples of that template, though others survive in various states of preservation across Southern California.
The station operated as a working Richfield filling station from 1937 through the late 1960s, when changing automotive technology, declining Route 66 traffic following the opening of parallel interstate freeways, and the Richfield-ARCO merger combined to make many older stations economically obsolete. The Cucamonga station was decommissioned in the 1970s and sat in various states of abandonment and partial reuse through the 1980s, 1990s, and early 2000s before the restoration project began.