Raymond Hood, the architect, made the plans for Rockefeller Center. He talked with the Radio Corporation of America (RCA) to make a large place for mass media. RCA owned the National Broadcasting Company (NBC) and Radio-Keith-Orpheum (RKO) companies. The first plan for 30 Rockefeller Plaza was made in March 1930. By May 1930, RCA, NBC, and RKO said they would move to 30 Rockefeller Center. The last plan for the building was done in March 1931.