The American flag has been a symbol of hope, freedom, and prosperity for over 200 years. Today is the day we celebrate NationalĀ Flag Day, receiving congressional recognition in 1949. Let that star-spangled banner yet wave!

Info:

http://blog.constitutioncenter.org/2015/06/a-brief-history-of-flag-day/

https://en.wikipedia.org/wiki/Flag_Day_(United_States)