Portrait of the American singing group Peter (Yarrow), Paul (Stookey) and Mary (Travers) on "The Jack Benny Program," circa 1963. (Photo by Hulton Archive/Getty Images)
American singer-songwriter and musician John Denver (1943 – 1997) performing juggling balls at the Empire Pool, Wembley, London, UK, 22nd April 1972. (Photo by Michael Putland/Getty Images)
AMSTERDAM, NETHERLANDS – JULY 08: John Denver performs live at the Jaap Eden Hall in Amsterdam, Netherlands on July 08 1979 (Photo by Gijsbert Hanekroot/Redferns)
Yucatan Peninsula – John Denver performing on the Calypso crew, appearing on the ABC tv special 'An Evening with John Denver'. (Photo by American Broadcasting Companies via Getty Images)
Unspecified – 1975: John Denver performing on the ABC tv special 'An Evening With John Denver'. (Photo by Disney General Entertainment Content via Getty Images)
