http://a.tiles.mapbox.com/v3/slate.truenames.html#2/4.2149/-6.3281

Comes from here: http://www.slate.com/articles/news_and_politics/map_of_the_week/2013/06/literal_meanings_of_places_in_the_u_s_map.html , The literal meanings of places in the U.S., mapped.