In attendance? Abigail Folger.
Abigail, at the time, was dating rock photographer, Jim Marshall... more on him later... and attended the festival as his date. Sadly Jim died before I could get a chance to speak to him but I did personally speak to several people via email who were all kind enough to share their memories of Abigail with me.
First up, photographer Elaine Mayes:
"I remember her as a pleasant person, friendly, and also that I did not really understand her relationship with Jim. They were very different kinds of people. When the murders happened in Los Angeles, I was shocked and upset. Losing Gibby was a terrible tragedy, and losing the others also a tragedy. What unfathomable circumstances and craziness was going on at the time. How awful for her and the others too"
And her memories from the book she wrote It Happened In Monterey
Dr. John Luce:
I knew Gibby as a teenager and a young aduly, but not well. She came from a wealthy old SF family (Folger's Coffee) She was very intelligent, hip and artistic. We shared a motel room in Monterey with several other photographers, including Jim Marshall, her date."
And here is the rest of his memories from Elaine's book It Happened In Monterey: