JOHNSTON DOROTHY M. 91, of North Palm Beach, FL and formerly of Pittsburgh, PA, passed away on November 21, 2013. Dorothy worked for Joseph Horn Company for 25 years in Pittsburgh. Preceded in death by her loving husband, Charles Walter Johnston. She will be greatly missed by her daughter, Carolyn Montini and husband, Robert; grandson, Dr. Reid Montini and wife, Karin; great-grandchildren, Austin and Caden. A Memorial Service will be held at a later date. Online condolences may be made at: www.aycockfuneralhomejupiter.com Send condolences at post-gazette.com/gb