You guys must be really bored. Get over it!
That last picture was taken post-Haight/Ashbury days and before the Mayor became an untouchable. Nowadays you would never get a picture with him unless you contributed to his campaign re-election fund. Ask him why he has such a blank stare in this picture. Do you realize that only a few years before this picture he was living under a waterfall in Colorado. That should explain many things you've wondered about.