In 1749, the French in North America perceived a threat by British expansion west of the Allegheny Mountains to the Ohio River Valley and beyond. The French commander, Pierre Joseph Celeron, sieur de Blainville, with 250 men, left Montreal, New France, to establish French claims. They buried inscribed lead plates at the mouths of six important tributaries to the Ohio River. Three lead plates have been recovered, one was sent to England, and two are in American historical societies. The final plate was buried just west of here at the mouth of the Great Miami River, before the detachment turned north. However, after the British captured Montreal in 1760, French claims east of the Mississippi River were ceded to Britain by the 1793 Treaty of Paris. British Parliament annexed to Quebec (now Canada) and controlled all lands north of the Ohio River until 1776.(Continued on other side)