 Charles and his wife, Ruth, were educators at the Lindbergh Elementary School for many years in Little Falls. Arrangements are with the David Donahower Funeral Home in Detroit Lakes. Donald Thielen, age 82, of Piers, passed away. A graduate of Piers Memorial High School in 1960. That's Donald Thielen, age 82, of Piers. News and funeral notices, again at 7 on KLTF.