09/19/70 Soundboard

[David Smith]

Has the pre-Dark Star portion of the 09/19/70 show from Fillmore East ever surfaced as a complete soundboard? This is one of the finest quality boards I've ever heard, and it's a shame that only the final 65 minutes have surfaced as a soundboard.   What is the origination of the soundboard recording, and did the recordist ever discuss what happened to the acoustic set and the first half of the electric set?