PLSS map

http://www.sco.wisc.edu/news/sco-update-on-plss-pilot-project.html

PLSS maps or Public Land Survey System are generally large scale maps that are used to identify land parcels before designating future ownership of that land. These maps are usually used in rural areas where there is more unclaimed land. Surveying companies use this type of map the most because it helps them plan for future building.