RM2GP5JH4–Folk group Peter, Paul and Mary, (from left: Noel Paul Stookey, Peter Yarrow, Mary Travers), circa 1960s

RMDNKY70–PETER PAUL AND MARY - circa 1960's - Courtesy Granamour Weems Collection. Editorial use only

RM2GP5JGE–Folk singer Peter Yarrow of the band Peter, Paul and Mary, circa 1960s.

RMDNKY6W–PETER PAUL AND MARY - circa 1960's - Courtesy Granamour Weems Collection. Editorial use only

RM2GP5JEW–Folk singer Mary Travers of the band Peter, Paul and Mary, circa 1960s.

RMDNKY72–PETER PAUL AND MARY - circa 1960's - Courtesy Granamour Weems Collection. Editorial use only

RM2GP5JH5–Folk singer Noel Paul Stookey of the band Peter, Paul and Mary, circa 1960s.

RM2GP5JGC–Folk group Peter, Paul and Mary, (from left: Noel Paul Stookey, Peter Yarrow, Mary Travers), circa 1965

RM2GP5JHD–Folk group Peter, Paul and Mary, (from left: Noel Paul Stookey, Peter Yarrow, Mary Travers), circa 1965

RM2GP5JGT–Folk group Peter, Paul and Mary, (from left: Noel Paul Stookey, Mary Travers, Peter Yarrow) in concert, circa 1987. Michael Lutch / TV Guide / courtesy Everett Collection