Barry Oliver was someone involved in the production of the Berkeley Folk Festivals in the sixties. I think I have seen his name as performing somewhere in the S.F. Bay Area lately so there may be some way to contact him on the web. Faith Petric (columnist in Sing-Out) was around in those days as part of of the San Francisco Folk Music Club (she still is) and may have some info. I went to the 63 Festival with headliners like Pete Seeger (and his father Charles) and Mance Lipscomb.