The World's First One-Page Dungeon?

I love the one-page dungeon concept.  Some of the entries in this year's competition were nothing less than inspired, and a few of them show up, suitably converted, in my Gloranthan sandbox, although none of them have yet been discovered, sadly.  Even the new megadungeon Stonehell was developed using them (note to self: buy Stonehell in book form!).

It was only after the contest, however, that I realized I'd seen it before, after a fashion.  Back when you used to send off a few pennies to Games Workshop for their latest price list or a sample copy of Owl & Weasel, you used also to get a two-page flyer that briefly described the new wonder that was Dungeons & Dragons, taken from the venerable Games & Puzzles magazine.  This flyer also contained a one-page dungeon, the Dungeon of the Ground Goblins, a remarkably simple yet evocative first dungeon level.  Elements of its architecture showed up in my own dungeons for years afterwards.

The page is probably unreadable in the jpeg on this post, so here it is in legible form for download.