CURTIS KNIGHT (& THE SQUIRES)
Pictures
Purple Onion
According to the caption in Curtis Knight's Hendrix biography "Jimi" this picture was taken at the Purple Onion, 4th street, Greenwich Village, New York City. He also dates this to be from 1964 which is highly unlikely, 1966 is probably more accurate.

Jimi Hendrix - guitar, Nate Edmonds - organ, Curtis Knight - guitar, Marion Booker - drums, Napoleon Anderson - bass