(Salem, OR)  --  Salem Police and Crime Stoppers of Oregon are offering a reward of up to 25-hundred dollars for information that helps them find a missing Salem woman.  Police say 42-year-old Tonna Purnell was last seen on or about March 27th at the Days Inn Black Bear Motel in Salem.  Purnell is five feet tall and slender with brown eyes and dark brown hair.  She may have been driving a black Ford Escape.