Artie Mogull, the record exec best known for signing Bob Dylan, died Nov. 25 of heart failure at his home in Beverly Hills. He was 77.Over five decades, Mogull aided the careers of Peter, Paul and Mary, Kenny Rogers, Helen Reddy, Deep Purple, Electric Light Orchestra, Laura Nyro and Olivia Newton-John. After serving in the Navy in World War II, Mogull began his music career in 1949 as a band boy for Tommy Dorsey’s orchestra. He went on to become an executive at several music labels, including Warner Bros., Capitol Records and MCA Records. In 1976, he became president and chairman of United Artists Records, which he eventually co-owned. He is survived by a brother, three daughters and four grandsons.