Thanks for the pointer, Simon.
I have several old copies of Zork, but most are PDP-11 / BSD ports from the late '70s to early '80s ... I think the earliest was for 2BSD, which would have been 1979. I might have copies from earlier, for other hardware and OSes, but I haven't fully cataloged the tapes I have managed to archive yet. Rainy day project that hopefully will wind up at TUHS, once I figure out what I can legally make available.
I have a copy of ADVENT that claims to be from 1976 that runs on TOPS-10 ... will ask MIT for an unmolested copy of ZORK and see if I can't get it to run on the hardware and OS it was intended to run on ... I've been meaning to break out the ITS tapes anyway, a friend wants to fiddle about with SHRDLU in its original home for some reason ... He even wants to borrow a Model 33 ASR & acoustic modem to go full retro. I suspect he's writing his life story, I know he worked with that kit at UNI ...
You are in an open field west of a big white house with a boarded front door.
There is a small mailbox here.