I bought a used copy of Red Hand of Doom not knowing that the maps were missing, so I'm not sure what those look like. I know that the War Drums Starter Set comes with two battle maps. The new adventure, Shattered Gates of Slaughtergarde, has a double-sided map highlighting the most involved encounter areas in the adventure, but the areas are disconnected so it's not exactly like the Fantastic Locations maps.
The D&D Basic game has 4 double-sided oversized tiles (as big as the box) that are in the same style as the battle maps.
Frostburn and Sandstorm each have 4 mini-battle maps in the back, the half-page kind that came with the older boosters. There was a Dragon issue that had some of those as well but I can't remember which one. I always thought they were too small to be very useful.