The Grateful Dead At the Family Dog [Getty Images]

SAN FRANCISCO - FEBRUARY 1970: The Grateful Dead (L-R Ron 'Pigpen' McKernan, Jerry Garcia, Bill Kreutzmann, Phil Lesh and Bob Weir) perform onstage at The Family Dog in Febuary 1970 in San Francisco, California. (Photo by Robert Altman/Michael Ochs Archives/Getty Images)

Michael Ochs Archives Robert Altman