1. Crawford NC (1982) Karst Hydrogeology of Tennessee. Guidebook prepared for US Environmental Protection Agency Karst Hydrogeology Workshop, Nashville, Tennessee. 102 pp, 5 plates
2. Crawford NC (1988) Karst hydrology investigation in the vicinity of the Campus-Injector Complex for the proposed Middle Tennessee Site of the Superconducting Super Collider. 179 pp, 7 plates. In: Crawford NC, and Barr TC (Eds), Tennessee White Paper: Hydrology of the Snail Shell Cave?Overall Creek Drainage Basin and Ecology of the Snail Shell Cave System. Report prepared for the Tennessee Division of Geology, Department of Conservation and US Department of Energy, 30 September 1988, 203 pp, 7 plates
3. Crawford NC (1991) Groundwater flow in the vicinity of the CSX train derailment near Lewisburg, Marshall County, Tennessee. Prepared for Ken Richardson, CSX Transportation. 81 pp
4. Crawford NC, Resource Consultants Inc., and Ogden Environmental and Energy Services (formerly ERC Environmental and Energy Services Co.) (1990) Removal action plan for the CSX-Lewisburg train derailment site, Lewisburg, Marshall County, Tennessee. Prepared for Ken Richardson, CSX Transportation, Inc.
5. Crawford NC (1992) Groundwater flow in the vicinity of three water wells contaminated with trichloroethylene (TCE), near Lewisburg, Marshall County, Tennessee. Prepared for the US Environmental Protection Agency, Region IV and O.H.M. Corporation. 152 pp