Peter Yarrow of folk music trio Peter, Paul and Mary dies at 86

FILE - Singer-songwriter Peter Yarrow, of the 1960s era musical trio Peter, Paul and Mary, performs during a memorial tribute concert for folk icon and civil rights activist Pete Seeger in New York on July 20, 2014. FILE - Folk trio Peter, Paul and Mary, from left, Mary Travers, Paul Stookey and Peter Yarrow, perform at a Los Angeles benefit to aid to Cambodian refugees on Jan. 30, 1980.

Peter Yarrow, the singer-songwriter best known as one-third of Peter, Paul and Mary, the folk-music trio whose impassioned harmonies transfixed millions as they lifted their voices in favor of civil rights and against war, has died. He was 86.