This episode I attempt to find the first interactive computer text interface. All I can say is, well, it's a journey. Selected Sources:
https://sci-hub.se/10.2307/3917015 - Early article on Stibitz's CNC Model I
https://archive.org/details/fortranprimer0000orga/page/103/mode/1up?view=theater - Primer on the FORTRAN Monitor System
https://kyber.io/rawvids/LISP_I_Programmers_Manual_LISP_I_Programmers_Manual.pdf - LISP I manual