Those diagrams also appear in "Smalltalk-80: The Language and its Implementation", which is now freely available: http://stephane.ducasse.free.fr/FreeBooks/

Those diagrams also appear in "Smalltalk-80: The Language and its Implementation", which is now freely available: http://stephane.ducasse.free.fr/FreeBooks/BlueBook/Bluebook.pdf (pages 737-741 of the pdf)