Wherever noted, the maps on this site are thanks to the great collaborative work of contributors from the Wikimedia Commons site. Click to see a full collection of these maps or you can search on Wikimedia Commons by author name to see the original work.

If you’d like to reuse any of these maps, you may do so under the terms of the Creative Commons Attribution Share-Alike 3.0 Licence.

We have taken care to make sure we credit the right person for the content we have re-used in accordance with the spirit of Creative Commons, but if you find content which has not been correctly attributed, please let us know.

The remainder of this website, including the world map on the homepage and the data associated with the maps, is the copyright of Webb Henderson and its licensors.