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 ...

The folk trio he formed with Noel Paul Stookey and Mary Travers became a pop phenomenon, scoring hits like “If I Had a Hammer” and “Puff the Magic Dragon.” ...

Peter Yarrow, a folk legend who sang in Peter, Paul and Mary, and later received a presidential pardon over a child sex abuse conviction, has died.

The singer and songwriter who helped popularize folk music in the 1960s died of bladder cancer at his home in New York.