Garcia & Saunders
The Matrix
San Francisco, CA
5/11/71 partial

Unknown source > reel > CD > Plexwriter PX-W4824A extraction (EAC v0.9 beta 4) > tracking (CD Wave v1.6) > sector boundary verification (shntool v1.01) > level 8 FLAC encoding (FLAC Frontend v1.7.1 Etree edition).  Reel >> digital by Harvey Lubar, EAC >> FLAC by jjoops.

Single Disc (2 tracks, 19:58)
01. Banter & Tuning (1) (2) [1:03]
02. Save Mother Earth [18:44] [0:10]

Notes:
- Mono recording, hissy but basically very nice.  The Jerry Site lists a soundboard, but I'd guess it's an upfront audience recording.  I don't know anything else about the lineage.
- Track 1 banter (1) @ 0:10: "Hey Merl, you wanna do that tune in 'G'?  Get spaced out a little?"
- Track 2 banter (2) @ 0:30: JG: "What's that?" MS: "I don't know."  JG: "Hey, c'mon man, the orange one, now it's the orange one, whatever that is.  Amber.  That one. Do away with it.  That's the exit light.  It's plenty. No, no, man.  Thanks.  Photo field [?]."

Thanks to Harvey Lubar for getting this wonderful little gem into my hands! 
Here's hoping the rest of it turns up someday.