Here's a handy list of all classes under $10 coming up in May + June 2017:
The Sumerians: History's Innovators: Thursday, May 18 in Prospect Heights
Thoreau's Wildflowers + Thoreau's Animals: Thursday, June 1 in Prospect Heights
Graffiti: Its History and Metamorphosis: Monday, June 5 in Prospect Heights
Life in Medieval Baghdad: Monday, June 5 in Prospect Heights
Nothing Dark about the Dark Ages: Tuesday, June 6 in Windsor...