Corry once posted about Mickey Hart's pre-GD days. And while this stuff isn't of particular interest to me, I have gathered a bit so I thought I might as well spill, too. Perhaps someone will be interested. I am sure it'll format badly, but, anyway, here's a list of pre-GD Phil Lesh gigs I have come up with. This has more information than Philbase.
Sorry this is so tiny, but if you had tried to paste this from Excel directly into Blogger, you'd throw out a tiny image, too.