To celebrate Flag Day, Cartoonist Clifford Berryman has Uncle Sam both singing and conducting "The Star Spangled Banner" while an enormous American flag waves in the background. (National Archives Identifier 6011566) June 14 is known as Flag Day, which commemorates the date on which the American flag was adopted by the Continental Congress in 1777. … Continue reading She’s a Grand Old Flag! Records About Flag Day, the American Flag in the National Register of Historic Places