- North Shore Senior Center
- 161 Northfield Rd., Northfield, IL, 60093
- Oak Brook Park District
- 1500 Forest Gate Rd, Oak Brook, IL, 60523
- Oak Brook Public Library
- 600 Oak Brook Rd, Oak Brook,, IL, 60523
- Oak Brook Public Library
- 600 Oak Brook Rd, Oak Brook,, IL, 60523
- Oak Brook Public Library
- 600 Oak Brook Rd, Oak Brook,, IL, 60523
- Oak Trace
- 200 Village Dr, Downers Grove, IL
- Oakton Passages Series
- 7701 N. Lincoln Ave, Skokie, IL
- Old Orchard Country Club
- 700 W. Rand Ave, Mount Prospect
- Orland Park Public Library
- 14921 S. Ravinia Ave., Orland Park,, IL, 60462
- Palos Heights Public Library
- 12501 South 71st. Ave., Palos Heights, IL, 60463