Jimi Hendrix & B.B. King w/ The Paul Butterfield Blues Band
Generation Club,
New York City, NY, USA
April 15th, 1968
Lineage: CDRx > EAC > wav > flac
Disc One:
01 Ad Libbed Impromptu Blues[*]
02 Kooper’s Shuffle[*]
03 Like A Rolling Stone
04 San-Ho-Zay/Instrumental Blues Jam
05 B.B. King Intro
06 Slow Blues
07 Fast Blues
Disc Two
08 It’s My Own Fault
09 BB King Intros 2
[*]Sans Jimi Hendrix.
Time: 1:33:44
themidnightcafe.org 
This is a very interesting rec. From memory Jimi is very up for it and eager to play with one of his heroes. BB however is very drunk and not keen on going up against Jimi at all!!
could be getting mixed up with another rec (been a while) but i think this is it