Join the Association at Oxon Hill Manor as it kicks off its 129th Annual Convention with a welcome reception. Built in 1928, the Manor sits high on a bluff overlooking the picturesque Potomac River. The land and former mansion, destroyed by a fire in 1895, was home to the nephews of George Washington, and the nephew of John Hanson, the first president elected by the Continental Congress under the Articles of Confederation. Featured inside are exquisitely appointed rooms with wood floors, crystal chandeliers and fireplaces. Everyone is invited to join as one of the most established trade organizations celebrates its rich history.