Archives Vol 1.0 - "Needle And The Damage Done" Rehearsal
UPDATE 9/17: It has been confirmed that this video is totally bogus and completely unofficial. Sorry.
UPDATE 9/16: When this video was posted, it was assumed that it had been uploaded by the official YouTube Neil Young Channel. Commenters have since pointed out this is not from the official channel but a similarly named channel. Thus, we can't really vouch for it's authenticity.
Here's a brief clip from The Archives Vol 1.0 of "Needle And The Damage Done". This is labeled as a rehearsal with no other information. Uploaded by NeilYoungChannel's Channel
Also, see The Archives Vol.01 1963-1972: Let The Speculation Continue.