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. (AP Photo/George Brich, File)
LOS ANGELES (AP) — 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.