Original source: http://xkcd.com/1688/

Nat Case
INCase, LLC
Minneapolis, MN


On 6/1/16 10:39 AM, Carlson, Tom wrote:
> Useful and fun.
>
>
> -- 
> Tom Carlson, PhD, GISP
> National Map Liaison
> Northwest Region
> US Geological Survey
> 934 Broadway, Suite 300
> Tacoma, WA 98402
> 253.552.1682 Office
> 253.302.1287 Cell
>
> *The National Map <http://nationalmap.gov> -  Your Source for 
> Topographic Information*
>