Oatman Lilac Bush

Historical marker location:

117 S Center St, La Harpe, Illinois

( Marker is on West Main Street (Illinois Route 9) west of Center Street, on the right when traveling east.)

Marker installed: 1994

Illinois was part of the French colonial empire, and the city of Cahokia, located near present-day Collinsville, was one of the largest pre-Columbian cities in North America. At its peak, around 1250 CE, Cahokia had a population of around 20,000 people.