I attended this incredible concert as a young lad and it changed my life for the better. I still have the original mimeographed line-up sheet. My uncle was the Chief of Police for Galloway Township, the place where the show was held, and I had to hear all kinds of shit about “druggie hippies” and the like. Of course, I never did any of those things…I swear (supreme bullshit) Here’s the super line-up courtesy Wikipedia:
Booker T. & The M.G.s
Paul Butterfield Blues Band
The Chambers Brothers
Chicago **Chicago Transit Authority
The Crazy World Of Arthur Brown
Credence Clearwater Revival
Lothar and the Hand People
Sir Douglas Quintet
Three Dog Night
Biff Rose was the MC and filled in for Joni Mitchell when she started to cry and ran off stage in the middle of her 3rd song when the crowd was not paying attention to her performance. It seems she was placed in the rotation directly after Mother Earth featuring Tracy Nelson and the crowd wasn’t ready to hear her mild act.
Crosby, Stills & Nash were originally on the lineup but ended up as a no-show, Nash supposedly had polyps on tonsils (but sang at Woodstock two weeks later). The Chambers Brothers were a last-minute substitute.