I haven't read Berton's book in a long time and my memory ain't what it was, Al, but I think it was set in the time when Bix was leaving the Wolverines and on into Goldkette and it also had some anecdotes about his time with Whiteman. My favorite book on Bix is Dick Sudhalter's bio. There is also a nice chapter on Bix in Nat Hentoff's oral history of early jazz "Hear Me Talkin' to Ya" (a great read if you haven't already) with some of Bix' contemporaries weighing in.