PLSS Map - Google Earth

http://freegeographytools.com/2007/plotting-public-land-survey-system-locations-in-google-earth

Public Land Surveying System (PLSS) maps are a way in which the PLSS can divide up and survey land into smaller parcels and include additional information about the land enclosed  This system divides up land into somewhat equal partitions which allows for easier management.  This system helped to facilitate the urbanization of areas by with a square block system for the road design.  The above map was generated in Google Earth and the overlay is the PLSS system in a location in the Western U.S.