Folk singer Peter Yarrow — writer of the timeless classic "Puff the Magic Dragon" and one-third of the legendary folk trio Peter, Paul and Mary — died Tuesday, a family representative said. He was 86 and had been diagnosed with bladder cancer four years ago.

Peter Yarrow from the critically acclaimed 1960s folk trio Peter, Paul and Mary passed away on Tuesday, January 7, at age 86 from bladder cancer. To honor him and the lasting legacy he left on the music industry,

The singer-songwriter and social activist best known as one-third of the folk-music group Peter, Paul and Mary, has died at age 86.