Range of dates of those source maps is unknown. This is a Point data set. The map projection used is Lambert Conformal Conic. The horizontal datum used is NAD27. The semi-major axis of the ellipsoid used is 6378206.4 meters.
Attribute data identify township and range.
These data are appropriate for use in local and regional thematic analysis. Data are not appropriate as a geodetic or engineering base. This is a legacy data set compiled circa 1984. See metadata for re-state1. An internal logical consistency check was performed in March, 1998.