free smalltalk! (books, that is)

Just discovered this page today:

• 20 smalltalk books, all available for free viewing online.

On a related note, here are some other free books online that I wasn't aware of until recently:

• "Programming Ruby: The Pragmatic Programmer's Guide"
• "Thinking Forth"; the PDFs there didn't work for me, but the LaTeX source is supposedly up there as well...