I'm putting together a reading list on Xerox Network Systems (XNS), the network architecture developed at PARC and Xerox which influenced TCP/IP.
I'd like to learn more to play with the network functionality of Medley Interlisp based on XNS. Medley's TCP/IP stack is currently incomplete and not working.
https://ftpmirror.your.org/pub/misc/bitsavers/pdf/xerox/xns/XNSG058504_XNS_Introduction.pdf