Bumping up this old thread.
Just playing "Count Basie Classics" Columbia CL 754, a compilation LP of 1940s studio sessions released in 1955.
On a quick look at the track list there seems to be no overlap with cuts on "Super Chief". Pretty decent sound considering the 1940s source material. Discogs lists an LP at $80(!) but I got a very nice VG+ Six Eye for $8 from my used record store.
Worth picking up if you see a clean copy for not stupid money.
There are more things in heaven and earth, Horatio,
Than are dreamt of in your philosophy.
Hamlet Act 1