While reading the recently-published Don Byas biography ("Sax Expat") I chanced upon a highly affordable copy of the CBS "A Tribute to Cannonball" Don Byas/Bud Powell LP of 1961 and took it home (and like it a lot): https://www.discogs.com/de/master/407175-Don-Byas-Bud-Powell-A-Tribute-To-Cannonball Looking for period reviews of the record in my historical jazz magazines, however, I drew a blank, and the Discogs page seems to indicate that the above 1979 release actually was the origin