The United States of America celebrated its 200th anniversary of independence on 4 July 1976 with festivals, parades, and New York City’s Operation Sail, a gathering of the world’s tallest ships.
Richert, Lucas Paul. "200th Anniversary of USA". The Literary Encyclopedia. First published 01 November 2008; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=5705, accessed 21 April 2015.]