Mary, from the group Peter Paul and Mary, passed away yesterday after a valiant fight against cancer. She was 72.

See this tribute page.

Some of the group’s best known recordings included: 500 Miles, Lemon Tree, If I Had a Hammer, Where Have All the Flowers Gone?, Puff the Magic Dragon, and Leaving On A Jet Plane. (I was surprised to learn that “Leaving” was written by John Denver)

Puff was written by Peter and a fellow student of his, and is about the lost innocence of childhood.