By 1939, the building could not accommodate all of the city government's agencies, several of which were located in alternate quarters surrounding Foley Square to the north. The offices in the Municipal Building included radio station WNYC on the 25th floor, the Municipal Reference Library on the 22nd floor, and the Marriage Chapel on the 2nd floor. In 1949, the city's commissioner of public works announced that four floors would be renovated and modernized in the first phase of a planned multi-stage overhaul. The next year, the city began installing a dial-telephone system at the Municipal Building, replacing the fourteen old telephone switchboards. At the time, the 20 city agencies in the building had a collective 1,264 telephones. The new switchboards were activated in 1951, and every line in the Municipal Building was given the same 10-digit phone number with 1,426 four-digit extensions.