Within four weeks after its move, WMAQ obtained the exclusive Chicago rights from American Telephone & Telegraph to broadcast President Warren Harding's address from San Francisco. It also had the rights for his memorial services on August 10, 1923. At the time, it was AT&T's policy to sell the exclusive broadcasting rights for an event to one radio station per city. Shortly before the special event, AT&T would send telegrams to all radio stations, informing them of what event was to take place. The first radio station to respond was then granted the exclusive broadcast rights in that city. WMAQ later broadcast both the 1924 Republican and Democratic conventions by this same arrangement.