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, 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,

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