Columbia subject headings:
Appalachian Region--Economic conditions--20th century.
New Deal, 1933-1939.
Regional planning--Appalachian Region--History--20th century.
Harvard subject headings:
Appalachian Region--Economic conditions--20th century.
New Deal, 1933-1939
Regional planning--Appalachian Region--History--20th century.
Princeton subject headings:
Appalachian Region--Economic conditions--20th century.
New Deal, 1933-1939.
Regional planning--Appalachian Region--History--20th century.