Oh, wow. I used this in a class many years ago, but had forgotten all about it. I can't say I felt joy at the load times for the EDWIN editor on an AT&T 6300 PC, an 8MHz 8086 machine made by Olivetti. Once it was loaded it was fine.

Texas Instruments also sold Personal Consultant Plus, an EMYCIN-like expert system shell, which was implemented in PC Scheme: https://www.deepdyve.com/lp/wiley/personal-consultant-plus-0...

A Polish book using TI PC Scheme was my first brush with Lisps (plus awareness of AutoLISP).

I can thank opening myself to wider world of programming languages (and all my use of Lisps) to that small 1990 book.