Peter Yarrow, one-third of the folk-music trio Peter, Paul and Mary, known for their civil rights advocacy and anti-war songs, has passed away at 86. Yarrow, who co-wrote "Puff the Magic Dragon," battled bladder cancer for four years. The trio achieved success in the 1960s with six Top 10 singles and two No. 1 albums, winning five Grammys. They also popularized Bob Dylan's songs and performed at the 1963 March on Washington. Yarrow continued to perform after the group's hiatus and the passing of Mary Travers in 2009.
Source: https://apnews.com/article/peter-yarrow-dies-paul-mary-767c223e40c243199b0d0875e29a5efc