(Portland, OR)  --  Police are searching for a missing Douglas County woman.  The Roseburg Police Department says 58-year-old Susan Marie Carson was last seen on September 3rd in the Myrtle Creek area.  Family members say she could be travelling between Roseburg, Myrtle Creek and Canyonville by bus.  She's described as five-foot-five-inches and 115 pounds with light brown hair and feathered bangs.