I know that Freeport IL is having a weeklong event pertaining to the anniversary and will have a commemorative postmark on August 27th available for request. Does anyone know if there are more events and postmarks at the other Debate cities in Illinois ie. Quincy and Decatur?

Hopefully, I have an extra FD cover for the 100th anniverary lincoln douglas debate stamp

then I could have a combo cover (as long as there is room).