User summary: An extensive array of reference map image files intended to serve as a resource for adventure creation. The maps are publicly usable and distributable, under specified but generous terms. The product is distributed as a large number of JPG map files, with references to the printed, commercial product from which they are derived originally: The Dungeon Books of Battle Mats, Towns & Taverns Books of Battle Mats, or The Wilderness Books of Battle Mats.