Department of Transportation Records Guide
Record Series Descriptions
Survey Quadrangle Records
Records document the establishment and adjustment of elevations within a given quadrangle (four-side area bounded by parallels of latitude and meridians of longitude used as an area unit in mapping). The quadrangles are named for a prominent community or feature within its borders. Records include correspondence, quadrangle maps, adjustment and computation sheets, and bulletins. The records are arranged alphabetically by quadrangle name and are located in Boxes 4-6.