Flag Day began in Philadelphia 234 years ago

On this day in 1777, the Second Continental Congress passed a resolution:

“Resolved, That the flag of the United States be thirteen stripes, alternate red and white; that the union be thirteen stars, white in a blue field, representing a new Constellation.”

Now, 234 years later, how ’bout a little history of the day?
In a guest post for the Daily Constitution, Betsy Ross House staffers share the history of Flag Day, which began well after the 18th century resolution was passed thanks to a schoolteacher who wanted the event to be recognized.