I had a chance to see this concert. I was serving out my hitch as a US Army draftee at Fort Ord (a few hours south of Berkeley). A fellow Army friend with tickets, knowing I was a Hendrix fan and had never seen him perform, invited me to the Berkeley concert. Since I was scheduled for duty that night, I had to decline. But figured no problem, I'll catch Jimi another time.
The Berkeley concert was in May, I believe. Four months later I walked into the office and someone said, "Hey, did you hear? Jimi Hendrix died."