Here's the obituary for Peter Krug from the Folknik newsletter of the San Francisco Folk Music Club: http://www.sffmc.org/archives/folknik_Jan-Feb_2017.pdf

Peter Krug —Oct. 11, 1942–Nov. 23, 2016
by Ken Hayes

Long-time SFFMC member, musician, and popular songwriter Peter Krug died on November 23 at his home in Guerneville. Peter was born and raised in the Bay Area. He embraced the folk music scene at an early age, first appearing on the KPFA show, "The Midnight Special". He went on to record an album with Country Joe Macdonald. He lived in the Haight-Ashbury in its heyday, opening a store, "Wild Colors", and worked with the diggers, giving out free food.
He was a social activist, working and performing for civil rights and labor causes. He lived and worked with the migrant workers, writing "The Migrant Song" about his experiences. That song was published in Broadside, and is now in the Smithsonian. It can also be found in Rise Up Singing. He went on to write many more great songs, that were recorded by many other musicians and translated into other languages.
He eventually settled in Sonoma County. He had two sons and a daughter. He also leaves behind two grandchildren, and a greatgrandchild.
In later years, he performed with Happenstance. Peter will be sorely missed, but his songs will be heard around campfires and musical gatherings for many years to come.
There will be a memorial on Sunday, January 29, from 12:00 noon to 6:00 p.m., at the Muir Woods Park Community Clubhouse, at 40 Ridge Ave, Mill Valley.
His family is struggling to cover the expenses, so if anyone is able to help out, or wants more information, contact his daughter (address available from Joe Offer).