Mortenson Oscar E. Mortenson, age 87, of St. Louis Park, passed away June 10, 2003 at the Methodist Hospital in St. Louis Park. Services will be Saturday, June 14, 2003 at 10:00 AM at Rock-Mankie Funeral Home in Braham. Visitation will be one hour before service on Saturday at the funeral home. Interment will be at Grasston Union Cemetery in Grasston, MN.