I'm a big fan of the Wilson Mosaic, I had two complete listens so far (and some incompletes, of course), and I think this is one that continues to grow.
Of the thirties recordings I only know the music that is part of the Billie Holiday Columbia box, and very little besides that. Oh, of course the marvellous Goodman trio, too! Love it!
There's one nice trio date with Benny Carter, on the Verve disc "3,4,5", which I remember is compared by the guy who wrote the liners, to the trio date Carter made with Art Tatum. A beautiful date, will have to listen to that one soon again.