Chicago Timeline: 1803 Fort Dearborn is established

Selective list of materials available at Chicago Public Library. Eight years after the Treaty of Greenville, the United States took up the claim to the land at the mouth of the Chicago River by building this fort. Named after then Secretary of War, Henry Dearborn. In 1805, Chicago became a center of Indian-United States relations when an Agency House and trading post (factory) were built.