These files are extracted from the SAILDART archive maintained by Bruce Baumgart, in Douglas Lenat's AM section here: https://www.saildart.org/[AM,DBL]/ The accompanying PhD thesis can be found here: https://apps.dtic.mil/sti/pdfs/ADA155378.pdf Execution environment Quoted from the thesis, page 124: Machine: SUMEX, PDP-10, KI-10 uniprocessor, 256k core memory. Language: Interlisp, January '75 release, which occupies 140k of the total 256k, but which provides a surplus "shadow space" of 256k addi...