I first encountered him on a Flying Dutchman LP by drummer Jimmy Gordon, where he played a very nice solo on a Stratocaster. That solo would have been the only reason to keep that rockish LP.
No idea. But for more details on this broadcast, go to https://attictoys.com/lucky-thompson-discography-1957-1974/#sess-year_1959 and scroll down to November 1959. Details on the video above are found in 1960.