Good (though old) lecture notes on Smalltalk

I've just found a link from the Squeak wiki to a set of lecture notes from Ralph Johnson (one of the Design Patterns "Gang of Four") on Smalltalk (based on VisualWorks, though he has since migrated to Squeak):
http://st-www.cs.uiuc.edu/users/johnson/cs497/notes98/online-course.html

The lecture notes are accessible, but the video links aren't as they're copyrighted by the university. If you're interested in finding the videos, you could try searching the squeak beginners' mailing list to find a reference...