DR JEanne: re Desilu
From Wikipedia:
The company was formed in 1951. For the first few years of I Love Lucy, Desilu rented space at General Service Studios (what is now the Hollywood Center Studios), on Santa Monica Boulevard and Las Palmas Avenue in the Hollywood section of the City of Los Angeles. Desilu soon outgrew their first space and in 1953 bought their own studio: the Motion Picture Center on Cahuenga Boulevard in Hollywood, at the site of what is now the Ren-Mar rental studio; most of I Love Lucy was filmed there. In late 1957 (taking possession in 1958), the company also bought the RKO Pictures properties, including its main lot in Culver City, with the backlot known as Forty Acres, and another lot on Gower Street in Hollywood.