Upcoming Services GWENDOLYN  VANDERBILT Gwendolyn C. "Gwen" Vanderbilt, 88, died Thursday, February 4. Services will be at 11:30 A.M. Friday, February 12, in Culberson Funeral Home, Hagerstown.  Rev. Ray Armstrong will officiate.  Burial will be in Crown Hill Cemetery, Indianapolis.  Visitation will be 5 to 7 PM Thursday. Memorials should be made to the donor's favorite charity. ISAAC DIENNER Isaac L. Dienner, 86, died Friday, February 5. Services will be at 11 AM Tuesday, with visitation from noon until 9 PM Monday at the home of his daughter, Barbara Stoltzfus, 13394 Olive Branch Road.  Burial will be in Lost Mile Cemetery.