BONNIE RAITT AND LOWELL GEORGE

October 17, 1972, Bonnie Raitt performed a radio show concert at the Ultrasonic Studio in Hempstead, NY. The recording got broadcast on FM station WLIR.
Bonnie had brought along Freebo, Lowell George and John Hammond to back her up.

http://dittiesandbeer.blogspot.be/2010/10/38-years-ago-today.html

The recordings will be released on CD soon :

• bonnie raitt & lowell george: ultrasonic studios
      (2014, cd, uk, iconography)

In case that you can't wait...