Independence Day – History.com
http://www.history.com/topics/independence-day

John Philip Sousa: American Composer, Conductor & Patriot
https://www.marineband.marines.mil/About/Our-History/John-Philip-Sousa/

The Declaration of Independence
https://www.archives.gov/founding-docs/declaration-transcript

The White House
http://www.whitehouse.gov

Revolutionary War
https://www.battlefields.org/learn/revolutionary-war

Betsy Ross Homepage
http://ushistory.org/betsy/

Arlington National Cemetery
http://www.arlingtoncemetery.org/