The first public exhibition of skywriting in America was made on this date in 1922. It had been developed in Britain during WWI by a handful of RAF pilots. On this occasion in November 1922, they had traveled to New York City to write "HELLO USA CALL VANDERBILT 7200" above Times Square.
Why that? What did that mean?
Well, one of the RAF pilots, John Savage, remained on the ground with the president of the American Tobacco Company, George Hill, while another RAF pilot, Cyrill Turner, wrote the message to demonstrate to Hill the power of advertising in this way. And "VANDERBILT 7200" was the phone number of the hotel at which Hill was staying. The hotel fielded 47,000 calls.