Soil Map of the United States, Using Actual Dirt
Les Gregor's map of common soils in the United States doesn't use pictures of dirt... ...d that he asked each state for a "representative" soil . Many sent theirofficial state soils —which, wow, who knew that was a thing? Mich... ...wow, who knew that was a thing? Mic...
http://www.neatorama.com/2012/12/20/Soil-Map-of-the-United-States-Using-Actual-Dirt/
