MAPSshr.SHK contains non-compressed IIgs super-res screens.
Use ShrinkIt to unshrink the file to obtain the 13 maps.

Message from the contributor of the original .GIF files is below.

__________________________



from Interactive Fiction Archive ftp://ftp.gmd.de/if-archive/

Date: Mon, 26 Apr 93 13:31:12 +0200
From: howell_ma@movies.enet.dec.com (another fine product of 
      the Sirius Cybernetics Corp  26-Apr-1993 1235)
To: blasius@gmd.de
Subject: Zork 0 map GIFs

Hi Volker,

Here are a set of GIFs from Zork 0. There are all the individual maps
filled in. The only one that is not complete is the delta GIF. This is
because of a problem with the graphics and the screen capture program
I was using.

Again, these might be of interest to somebody.

Mark...