Peter Yarrow, the singer-songwriter, activist and founding member of the folk trio Peter, Paul and Mary, has died at 86 after battling bladder cancer.

Peter Yarrow, who was popular for his stint with the folk music trio Peter, Paul & Mary, has passed away at the age of 86. Known for releasing hits like “Puff, the Magic Dragon,” “500 Miles,” and more with the group,

Peter Yarrow, one third of the chart-topping 1960s folk trio Peter, Paul and Mary and co-writer of 'Puff,the Magic Dragon' has died.