<a href="https://en.wikipedia.org/wiki/Arctic" class="extiw" title="en:Arctic">Arctic</a> Population Map
US Federal Government
2002
<a rel="nofollow" class="external free" href="http://benmuse.typepad.com/arctic_economics/2008/04/us-ice-breaking.html">http://benmuse.typepad.com/arctic_economics/2008/04/us-ice-breaking.html</a>