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Flag Timeline - US History
Timeline of the flag of the United States - Wikipedia
Flag of the United States - Wikipedia
flag of the United States of America - Encyclopedia Britannica
US Flag History Timeline - Stars and Stripes or Old Glory
Flag Day Timeline - Infoplease
Facts about the United States Flag | Smithsonian Institution
Flag History & Evolution - National Flag Foundation
Flag of the United States Timeline of Events
Short History of the United States Flag - American Battlefield Trust