ca June 10-11, 1800
John Adams was the second President of the United States (1797–1801) and a key figure in the American Revolution. He visited Mount Vernon in 1800, around June 10 or 11.
His Excellency John Adams arrived at this place [Alexandria, Virginia] yesterday. He was escorted by a troop of cavalry into town….The President is on a visit to Mount Vernon, from whence he will return on Wednesday, and partake of a public dinner to which he has been invited by the citizens of Alexandria.