|Updated November 12, 2004|
|"The Mackay System"
|1904, Note Clarence H. Mackay shown as President of both Postal Telegraph and CCC. Clarence Mackay assumed the Presidency of both the Postal Telegraph-Cable Company and CCC in 1902 shortly after the death of his father in July 1902.|
|1910, Note now advertising that the Mackay System "Extends Over Two-Thirds Around The Globe"|
|1913, Note growth of Postal Telegraph land lines particularly in the eastern half of the USA.|
|1925, Note increased Trans-Atlantic cables.|
|1926, Note the slogans, "Telegrams To All America". This alludes to the acquisition of All America Cables and its' direct lines into South America.|