Thanks to Slaheddine Kefi for the scan.

Note that the module code is E1 (which stands for "Experten" -- the letter "x" in German is pronounced "ix", which kills the hint to the Expert Set).  This module was both included and sold separately from the Expert Set (a decision which doesn't make much sense....)  Thanks to Uwe Siebel for this info, and to Adrian Newman for the scan.

First Israeli print.  Thanks to Adrian Newman for the scan.

Second Israeli print, and identified as such on the interior booklet.  Thanks to Adrian Newman for this info, and the scan.

Matches the US Fourth print (orange cover) with the following differences: "On the inside back cover of the US module there's a color version of the Isle's map, plus a copy of the text from page 5; in the Italian version, the second "page" of the back cover is missing; this version comes with a detached page instead.  On one side of this page, there's a black and white version of the Isle's map; on the second side, maps #12 and #13 (from inside front cover) are replicated."  (Thanks to Luca Lettieri for this info, and to Ciro Alessandro Sacco and Danilo Moretti for the scan).

Matches the US Fourth print (orange cover).  There were at least nine (!) prints of X1, but it is believed they only differ on the printing line info on the copyright page.  Thanks to Adrian Newman for this info, and to Richard van Tol for the scan.

Came bundled with the Norwegian Expert Rulebook (hardback), as well as was included inside the rulebook itself, in the back.  No further information known.  (Thanks to Brett Easterbrook for this info).