Bureau County Historical Society Executive Director Pam Lange (left) and Vice President Kathy O'Malley gear up for the historical society's upcoming guided walking tour of Princeton's Main Street this Saturday, Sept. 28. The "South End" tour begins at 10 a.m., and the "North End" tour begins at 1 p.m. Refreshments will be provided by Kramer's Kitchen and Flour House Bakery. Tickets are by reservation only. The cost is $25 per ticket for a tour of both the North and South ends of town, or $15 per ticket for a tour of just one end of town. To reserve tickets, contact the Bureau County Historical Society at 815-875-2184.