ADAMS, JOHN QUINCY, President. Autograph letter signed ("John Quincy Adams"), to B.O. Tayloe, Washington, D.C., 29 May 1824. 1 page, 4to, slight yellowing. ADAMS DECLINES TAYLOE'S OFFER OF A DIPLOMATIC MISSION TO GREAT BRITAIN. As the position had already been filled, Adams writes: "Should an occasion hereafter occur, free from previous promises to others, in which it may be in my power to accommodate your wishes, I shall be happy to avail myself of it."