Mike, I'm sure it's a live recording. You hear cutlery clincking from time to time... and the tracks are live show long tracks
Here's some additional info:
Re Green Dolphine: it's a 19:20 long track. It begins in a medium-fast tempo, Solo order:
tenor, bari (GREAT solo, btw), trumpet, piano, bass, drums. then at about 12:50 mark, it goes to tutti where the tempo picks up to fast. Then you have short solos in that order: tenor, alto, piano. The piano slows things down to the original tempo, and then head-out.
2nd track (So long, goodbye. a basic blues) is about 16:10 long (omitting the chatter before the music begins)
3rd and 4th tracks are 2 parts of Fulton St. Symphony. It clocks around 17:50 sans introduction.