File talk:Most common ancestry in the United States by county.png
Appearance
What is this map based on? It looks like this map except merging "English" and "American": http://up.wiki.x.io/wikipedia/commons/thumb/a/a7/Census-2000-Data-Top-US-Ancestries-by-County.svg/2000px-Census-2000-Data-Top-US-Ancestries-by-County.svg.png