PLSS Map

http://www.fairview-industries.com/standardmodule/mn-exmpl.htm

The Public Land Survey System (PLSS) is the surveying method used historically over the largest fraction of the country to survey and spatially identify land parcels before designation of eventual ownership, particularly for rural, wild or undeveloped land.

In the picture above, we observe a small portion of Minnesota on a 1:100,000 scale quadrangle.  County, district and zoning rights are specifically established.