URI: 

       These are walkthroughs for the Zork trilogy and the _Hitchhiker's
       Guide to the Galaxy_ Infocom game (just because).  I did not write
       these; they were obtained from somewhere else on the internet, and,
       if I can find that URL again, I'll include it here.
       
  TEXT HitchhikersGuide
  TEXT ZorkI
  TEXT ZorkII
  TEXT ZorkIII