This Tradewell at Morgan Junction (Fauntleroy, Morgan and California) opened in December 1955. The tax assessor's photo dates from March 26, 1956.
Although it included contemporary grocery technology, this was one of the last buildings before Tradewell hired Welton Becket, resulting in the 1956 Crown Hill store and then award-winning Burien store. Read more about the Burien store here, ba-kground.com/50s-futurism-tradewell/
I just might talk about this on May 20 at 2pm at High Point Library as
bart of the Southwest Seattle Historical Society series SouthWest
This photo appears in my roundup of assessor's photos of Seattle's drive-in markets, ba-kground.com/car-architecture-seattle-photos/
From property file 563750-0005, address 6500 California Ave SW, Washington State Archives Puget Sound Regional Branch.