(Library of Congress, photographer unknown).

Few details about this photograph can be substantiated. The original caption was supposedly “Radio Pictures Chorus Girls“. This might have been a reference to RKO Radio Pictures Inc., which operated from 1929 to 1959.

The girls were almost certainly entertainers who were photographed while having fun exercising on a Hollywood rooftop — possibly in 1938. The automobiles in the background were likely built in the 1920s and 1930s, and the boxing scene was obviously posed for the photographer. (If you can identify the street address or know any of the girls in the image, I’d love to hear from you!)

RKO Studios at Melrose Avenue and Gower Street, Hollywood, circa 1937.