Elmer Lower, a former ABC News president who tripled the size of that network’s news division during the 1960s and ’70s, died Tuesday in Vero Beach, Fla. He was 98.Lower served as president of ABC News from 1963-74. In that time, the news division grew from 250 to 750 employees, and the evening news expanded from 15 minutes to 30 minutes. Lower was also behind the network’s hiring of broadcasting greats such as Peter Jennings, Ted Koppel, Frank Reynolds and Sam Donaldson. Lower was honored with a lifetime achievement Emmy award in 1975. He retired from news in 1978. He then went on to educate young journalists for more than two decades.