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I see palm trees and the slide was found here in California so I'm guessing this is in California in the 1950s. Oh, and "M" starts October 12th, whatever "M" is. View full size.
Looks a lot like the same area and highway in this shot my brother took in 1956. On that trip he was heading down the Pacific Coast Highway on the way to a friend's place in Laguna Beach, so PatQ's guess is probably right on the money.
As late as the end of the 50's, I remember Pacific Coast Hwy through Huntington Beach was lined with oil derricks, later supplanted with ranks of "donkey head" pumps of various types in the late 60's. Google "Huntington Beach Oil Wells" images for several postcard shots of similar derrick plantations.
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