Ah, Smalltalk, that sweet, elegant language. It's amazing to realize how very LONG ago this was, and to know that it (and a few others, such as C, LISP, and yes, FORTRAN) lives on, in daily use, here and there. This book is an example of how to write technical information. It's clear, concise, and never descends to cute or clever to make a point. Clarity is best. ( )

http://stephane.ducasse.free.fr/FreeBooks/ has a free edition ( )

A classic computer programming book that defines good technical writing. While the language itself is now a cult item and largely obsolete, this book is still valuable to read for its insights into how to design and build computer languages, as well as its clarity of style. ( )