Join us when the Museum is open late for this free talk by the Castle's own archeologist, Jeff Sommer, on his recent explorations of a potential site of the Tittabawassee Boom Company. Talk will begin at 5:30 PM and guests are welcome to explore the exhibits before or after until closing time at 7:00 PM.5:30 to 7:30 PM. Castle Museum of Saginaw County History, 500 Federal Ave. Phone 989-752-2861.