Westchester Shopping Center, just north of the Los Angeles Airport at 8765-8799 South Sepulveda Boulevard, was one of many suburban shopping centers profiled in the 1951 book Shopping Centers - Design and Operation, written by Geoffrey Baker and Bruno Funaro. At the time, the concept was quite new and much discussion in the book centers around parking lots and their placement. Needless to say, it's a problem which has never been adequately solved.
The major tenant was Milliron's Department Store, which was eventually bought out by The Broadway, which of course met the same sad fate some years ago when it was bought by the Federated chain, most of which were rebranded as Macy's. Though the rooftop parking lot was removed, the building's exterior has remained remarkably intact, as evidenced by the pictures below.
As evidenced by the Google street view images below, though the building remains largely unchanged, the unusual bump-out window display units along Sepulveda have been removed, and the entrance is no longer on the corner.