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Yes, the photo is of the Long Beach Rivoli.
From the book “Radio City Music Hall” and the website ASME.com
Radio City Music Hall Hydraulically Actuated Stage (1932)
“The precision "choreographed” staging of Radio City Music Hall offers size and versatility, unlike any other. Built in 1932 by Peter Clark, its innovative elevator system is a forerunner of other stage designs (including the Metropolitan Opera House) as well as aircraft carrier systems built in World War II". Further information is at: View link