I have that Teddy Wilson box from Storyville, from when it was released, and have probably not listened to it all since I got it. It's an odd long box, and doesn't sit on a shelf with the other Wilsons I have. As a result, I overlook it, though it has lots of really nice music.
I was musing today about my favourite clarinetist Edmond Hall (some days it's Pee Wee) and remembered the things that Ed did with Wilson, including some sessions in this Wilson long box. So, a listen to CD 2 for some Wilson Café Society sextet sides done for the Muzak transcription service in 1944, and then on to CD 3 and four tracks noted as "Recorded at Embers, New Your, December 31, 1953-54" with Wilson, Hall, Arvell Shaw and Bert Dahlander.
But wait! for the first time, I listened to this with earphones and son-of-a-gun, this session is in stereo: piano hard left, clarinet hard right and bass/drums centre-ish. 1953/54? not likely...
The invaluable Hall bio/discography "Profoundly Blue" by Manfred Selchow notes the likely source. Shortly after Hall left the Louis Armstrong band, Selchow says: Back in New York, Ed Hall joined Teddy Wilson's trio as a guest artist at the Embers (161 East 54th St.) for a few nights. Selchow documents it as Aug. or Sep. 1958, tape only and lists four more tracks that do not appear on the Storyville package. That it is stereo leads me to believe the 1958 date, not the New Year's Eve date indicated.