What were the main events of the Lincoln-Douglas debates?

They were held in 1858, in 7 different locations throughout Illinois.

1. Washington Square, Ottawa, Illinois
2. Freeport, Illinois
3. Union County Fairgrounds, Jonesboro, Illinois
4. Coles County Fairgrounds, Charleston, Illinois
5. Old Main, Knox College, Galesburg, Illinois
6. Washington Park, Quincy, Illinois
7. Broadway & Market Streets, Alton, Illinois