I got my favorite version ever off slacker.com and I have not been able to find it again. Unfortunately I put in on my ipod but I lost the "master". I don't know how to get it off my ipod nor do I know where the particular version was played.
Others I have found since, great, but a level below imo:
1-31-81 Keystone (Berkley) - actually exactly 15 minutes - really good
6-18-82 unsure from where
5-18-84 Irvine Calif
The youtube video's are about 16 minutes (both together, it's part one and two)
You may find some here - lots of Jerry to download (I forget where I get this stuff from) www.jerryradio.com/downloads/
~If the thunder don't get ya then the lightning will