The story
The Continental Congress voted for independence from Britain on 2 July 1776 and adopted Jefferson's Declaration of Independence on the fourth; the date on the document became the date of the holiday. John Adams wrote to his wife that the day should be kept with pomp and parade, bonfires and illuminations from one end of the continent to the other, and it has been.
Both Adams and Jefferson died on 4 July 1826, the fiftieth anniversary. The day became a federal holiday in 1870.
