On 3 January, General Washington defeated Lord Cornwallis at Princeton. The Continental Congress thereafter adopted the Stars and Stripes.
Richert, Lucas Paul. "Cornwallis defeated at Princeton". The Literary Encyclopedia. First published 01 February 2009; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=5919, accessed 25 April 2015.]