Before there was Planet Drum there were the Diggers. From 1966-1968+ Peter Berg and this loose knit band of artists/activists/anarchists were active. There are several interviews with Peter about this period. One interview from 1982 (partially transcribed) is available on the Digger website. Several other transcriptions will be posted here on the Planet Drum blog site soon.
Salubrious Solstice 2017! The following posts will celebrate the end of the year:
Peter Berg interviewed about the Summer of Love for The American Experience
and
David Mairowitz Interviews Peter Berg for My 68
Planet Drum Foundation 