Hey, I was at that gig!
Hopper tried in vain to find an acoustic bass. A woman ran a mile or two to her apartment to get her acoustic guitar for him to borrow.
Clean Feed has some of their items on sale right now. For US customers, the price is $7.50 shipped. Here's the link:
http://www.cleanfeed-records.com/discolistagempreco.asp
Art Pepper - The Complete Galaxy Recordings - disk 5
With George Cables, Tony Dumas, Billy Higgins - Live in Tokyo 1979 - issued on "Landscape", "Besame Mucho"
Maybe it is not quite what you are looking for, but all of the information can be found here: Modern Jazz Discography: Art Pepper
I think that will work well enough ... I think I can match the tracks on the discs to the corresponding session(s). Thanks.
Does anyone have a scan of the Art Pepper Complete Galaxy Recordings discography? I have the small German version of the set and am lacking a booklet...