In 1749, Pierre Joseph de Celeron de Bienville marked the Ohio Valley for France?
He buried lead plates at several locations (at least 6) and also marked trees with pieces of metal announcing French claims to the land. I understand that at least one or two of the lead plates was recovered some time in the 19th Century. Does anyone know where that plate or plates ended up? Is it in the hands of a museum? If so, which one?