Well, it certainly seems that they let the campaign die, now didn't they. I apologize for the extreeme time that has gone between the original post and my reply ... I think that it's not Thread Necromancy, considering the nature of the request, so, I hope that it's deemed acceptable.
I have loved all the Nyambe material since I originally got it, but since I am more of a collecctor than anything, I haven't had the opportunity to use it until now. I am using it much in the same way that Nothern Crown does, but I am using it as source material for the continent of Hepmonaland in the D&D World of Greyhawk setting. At any rate, I discovered that the Player's Lorebook predated the main Nyambe core book, so there's not a lot tha tI can imagine is in the one, that's not also in the other, but, nevertheless ... I have a copy of it, but it is also now ditributed freely on the Atlas games site ... [edit: Link removed because the Atlas homepage for Nyambe has a dead link].
Hope that helps!! ... and maybe generates a little more Nyambe traffic on the forums!