Got this just released 3CD set from the RLR label
The set includes more than three hours of music recorded during the 1958 tour of the 'Jazz from Carnegie Hall' musicians. Jay and Kai were part of the tour but the featured musicians also include Lee Konitz, Zoot Sims, Phineas Newborn, Red Garland, Oscar Pettiford and Kenny Clarke. The set adds a lot of excellent music to what had previously appeared on several bootlegs releases.
Sound is not exactly perfect but is quite acceptable!