MEDIA

Editor of San Diego Union Retires: Gerald L. Warren, who led a major journalistic improvement and expansion of the San Diego Union as editor and then oversaw the merger with its sister paper the Tribune, announced his retirement. Warren, 64, will be succeeded by executive editor Karin Winner, 49, effective Monday. Warren was deputy press secretary to U.S. Presidents Nixon and Ford before becoming editor of the Union in 1975. The paper merged with the Tribune in 1992. The Union-Tribune, published by the La Jolla-based Copley Newspapers, has a circulation of 379,307 daily and 457,540 Sunday. Winner joined the Union in 1976 as special features editor after seven years as an editor for Women’s Wear Daily and W.