http://www.boog.com/. Baldori and his band The Woolies backed Chuck Berry throughout the 1970s and beyond, and also on the album San Francisco Dues. (Baldori also played harmonica on the Back Home sessions.)
Recently a sound recording of the Ann Arbor show turned up on youtube, and it's a beauty. You can hear it below.
Here's another picture from Baldori's site. Looks to me like the color photos on the youtube are from the same show. Pretty cool.