I'm relatively sure that McShann did not record in the 20s. In fact, I don't even think that he recorded in the 30s.
According to Tom Lord´s discography, his first session took place in 1940.
I think you´re right LAL. According to the available on-line information from Tom Lord´s discography, Artie Shaw took part in 302 sessions, starting in 1928 and ending in 1968.
Are you trying to interfere posting while I'm talking to myself?
Should I say "bye" to king ubu before I go back to work?
... though he interferes while I talk to myself... and to the voices I hear inside my brain since I got mad due to this thread....
Anyway, BYE ubu!