Warlock Joe's Dungeon for Babies

From publisher blurb:

Warlock Joe, aka Josiah Darksoul (not his real name), is an epic-level magic-user who has transcended such paltry things as life and death and space and time. Now, he amuses himself by building dungeons and luring adventurers and monsters into it for fun. Joe is concerned about the youths. He is worried, in these changing times, that the next generation of adventures will come of age without ever having set foot into a dungeon, much less one containing a dragon! He aims to ensure that grim future never comes to pass, by creating an introductory dungeon for 4 LVL 1 PCs.