2/26/90 is over 30 mins and has some great playing by Bobby. Jerry just hangs back during the transitional jam (smokes a ciggy) and Bobby does some really cool stuff. Maybe not the best, but I sure love it!
Also, I think 11/1/79 breaks the 35 minute mark.
Listened twice to 2/26/90, Bass wasn't loud enough first time. Really dig Mickey's Talking Drum work.