[["June 14, 1922, President Warren G. Harding, while dedicating a memorial site for Francis Scott Key, became the first president to have his voice transmitted by radio. On December 23, 1923, Calvin Coolidge became the first president to broadcast his State of the Union address. ", 88.0], ["Calvin Coolidge", 24.0]]
who is the first president to be heard on radio
history,presidents