George Shearing - Two Unique Offerings

I haven't dealt with popular music for quite some time now; therefore, please allow me to do so: I have in my vast library of historical performances two gems that delightfully represent the wonderful pianist from Britain, George Shearing.
The video I have was done at a Boston Pops concert around 1980, and includes the following morsel:
With conductor John Williams and the Boston Pops Orchestra looking on after a number done by Shearing and the orchestra, Shearing announced that he had finally come up, after countless public performances, with a new incarnation of his famous "Lullaby of Birdland." He then proceeded to play the tune with the customary sophistication one expects from a Shearing arrangement.
Accompanying Shearing was the acclaimed bass player, Don Thompson.
About a minute or so into the tune, Thompson stopped playing , placed his string bass on the floor, and proceeded to the piano, with Shearing still playing. Thompson then sat on one edge of the piano bench, gently but firmly pushed against Shearing, easing him off the other side of the bench, and picked up on the piano where Shearing had left off. Shearing stood for a few moments next to the bench while Thompson proceeded to overwhelm the audience with really brilliant piano playing.
Shearing then eased himself back onto the bench on the upper side of the keyboard, and the two of them began a truly historic performance of "Lullaby of Birdland", part of which included a section of Bach's "Sheep May Safely Graze," played by Shearing, and which fit perfectly into the harmonic pattern of "Lullaby" (leave it to Shearing to create such cleverness!).
The tune went on for another couple of minutes, with a virtuoso ending by both Shearing and Thompson (who absolutely stunned me with his piano abilities), followed by a tumultuous reaction from the audience. What an event!
The second gem is on an audio cassette, done around thirty years ago, in New York, with George Shearing (believe it or not) as a disc jockey on an all-night jazz radio program, which went on for about two hours. Shearing would discuss the record he was about to play, and eventually put on some records of his playing which he had brought with him to the radio station, none of which had ever been released commercially. The program ends with a couple of Shearing performances
on (honestly!) an accordion.
I have this tape.
If you have interest, perhaps you should try Google or some other internet entity to see if you can obtain these two rarities.
Good Luck!