FWIW, that[0] links via abstracts to tech report pdfs[1][2][3].

Hmm, looks like https://www.softwarepreservation.org/projects hasn't been submitted to HN in some years.

[0] Parallel Lisps / SPUR Lisp https://www.softwarepreservation.org/projects/LISP/parallel#... [1] SPUR Lisp: Design and Implementation https://www2.eecs.berkeley.edu/Pubs/TechRpts/1987/CSD-87-373... [2] Features for Multiprocessing in SPUR Lisp http://www2.eecs.berkeley.edu/Pubs/TechRpts/1988/CSD-88-406.... [3] Implementation of Multiprocessing SPUR Lisp http://www2.eecs.berkeley.edu/Pubs/TechRpts/1988/CSD-88-459....