Mary Travers, one third of the famous 1960s folk music trio Peter, Paul and Mary has died of cancer. She was 72.

A publicist for the group says Travers died Wednesday at a Danbury, Connecticut hospital where she was being treated for leukemia. The publicist said she had been battling the disease for a number of years.

Travers and her band mates, Peter Yarrow and Noel Paul Stookey made up one of the most popular American music groups of the 1960s.

Peter, Paul and Mary mixed folk music with political activism, promoting civil rights and protesting the U.S. war in Vietnam with such songs "Blowin' in the Wind," "If I Had a Hammer" and "Where Have All the Flowers Gone?."

The group also scored major hits with "Leaving on a Jet Plane," "Lemon Tree," and "Puff (The Magic Dragon)."

Some information for this report was provided by AFP and AP.