I don't know about the E1-3 modules, but I downloaded a map for a Dungeon Magazine scenario on wizards homepage - and in that pdf there were 2 versions of every map, on with GM stuff and one without. What was dissapointing however was the quality of the maps. They had been quickly stiched together from elements from their tilesets and you had to resize them a lot to get a proper 1 inch battlemap from them