Films released around the time of though not exclusively during the Hughes era at RKO. To be specific the Hughes era itself was from May 1948 to July 1955.
With 1947 being used as a sample year of the studio before Hughes to get a sense of the productions the studio was making at the time.
RKO ceased productions in 1957, and beyond that the studio was stuck with two Hughes heavily tampered with films they released in 1956 & 1957 respectively.