Including how to build a full workstation with memory safe systems languages, besides Smalltalk,
Interlisp-D, now recovered and playable in the browser,
Mesa with XDE (think the safety Zig is selling today, but in 1985)
http://bitsavers.informatik.uni-stuttgart.de/pdf//xerox/xde/...
Cedar, a full graphics workstation in the evolution of Mesa, now with proper mix of reference counting + cycle collector, as full GC implementation,
Here the demo done by Eric Bier for the Computer History Museum,