United States. Soil Conservation Service. Office of Research

• Hydrologic data, Blacklands Experimental Watershed, Waco, Texas, 1937-1939
• Hydrologic data, Central Great Plains Experimental Watershed, Hastings, Nebraska, 1938-40
• Hydrologic data, North Appalachian Experimental Watershed, Coshocton, Ohio, 1939
• Hydrologic data, North Appalachian Experimental Watershed, Coshocton, Ohio, 1940