Ash, Andrew N. A Preliminary Natural Areas Inventory of the Lumber River Floodplain. A Report Submitted to the North Carolina Natural Heritage Program [and] North Carolina Nature Conservancy. [Raleigh]: NC Dept. of Environment, Health, and Natural Resources, 14 Nov. 1990.
Geology (Robeson County)
Bridgers, John Bracey. “Groundwater pollution potential: a case study of Robeson County, North Carolina.” Thesis. Appalachian State U, December 1991.