I find a lot of the stuff in the Scheme sphere well-written, clear, concise, comprehensive, and eye opening (from the "lambda papers" onward...although the earl

I find a lot of the stuff in the Scheme sphere well-written, clear, concise, comprehensive, and eye opening (from the "lambda papers" onward...although the early history of Scheme is probably not exactly the kind of documentation you're asking about). I've learned an enormous amount from the Dr. Scheme documentation (I guess it's all "Racket" now). As another example, the documentation for Gambit-C is a real pleasure to read: http://www.iro.umontreal.ca/~gambit/doc/gambit-c.pdf http://www.iro.umontreal.ca/~gambit/doc/gambit-c.pdf