This URL gives a choice of format: online, purchase hardcopy, or download PDF (requires free account): https://www.nationalacademies.org/publications/28594
Or did they just short circuit. "Dead relative -> Say sorry for your loss". Like an AI bot.
It's the second one.
"Interlisp is a very large software system and large software systems are not easy to construct. Interlisp-D has on the order of 17,000 lines of Lisp code, 6,000 lines of Bcpl, and 4,000 lines of microcode."
So large. :)
http://www.softwarepreservation.net/projects/LISP/interlisp-...