Niko, there's another book by Jeroen de Valk (only in Dutch).
And a good book written by Coen de Jonge, "Belevenissen in bebop: Rein de Graaff".
It's hard to find. I have some more Dutch jazz Books, but these are out of print (OOP).
Indeed, Roswell Rudd is a very nice guy. But I never got my pen back......
Most are nice guys. I mention 2 of them: Andrew Cyrille & Rein de Graaff.
BTW nice story, Paul.