The Archives and Special Collections has a small collection of General Land Office maps. The Black Hills maps are supplemental plats, extension surveys, and dependent resurveys with dates between 1927 and 1932. They show mineral surveys, mine names, homestead entry surveys, homesteader names, forest reserves, sections with subdivisions, surveyor names and sometimes relief. The Cheyenne River Reservation maps are dependent resurveys with dates between 1929 and 1931. They show allotments with serial numbers, and sections with subdivisions.
Does anyone know the location of the surveyors’ notes connected with the resurveys? Does anyone know the meaning of the serial numbers on the allotments?