The town of Orcutt, California was established as a Union Oil town when one of the company's largest gushers was discovered there in the early 1900's. The gusher was named "Old Maud" and she would become the foundation for the Union Oil company in the Santa Maria, Lompoc, Orcutt, and Guadalupe area for many more years.
Here are some photos of service stations taken on the Coast Highway (that's Highway 101) coming from Los Alamos into Orcutt and then into Santa Maria in the 1930's. If you know this area, you know that the highway no longer runs through either Los Alamos or Orcutt today but bypasses both towns to the east.
Despite their significant presence in the area Union Gasoline wasn't the only brand available...
I've written about the Richfield Beacon towers on Oldgas before. Santa Maria was the location for one of them as you can see on the right. The towers on the left are oil wells of course. If you look closely you can see service stations up the highway on the right too. This is a Cal Trans photo so they were more interested in the new pavement then the gas stations when this photo was taken. Keep posting those photos!