Columbia subject headings:
Appalachian Region--Description and travel.
Appalachian Region--Economic conditions.
Appalachian Region--Historical geography.
Appalachian Region--Social conditions.
Harvard subject headings:
Appalachian Region--Description and travel.
Appalachian Region--Economic conditions.
Appalachian Region--Historical geography.
Appalachian Region--Social conditions.
Princeton subject headings:
Appalachian Region--Description and travel.
Appalachian Region--Economic conditions.
Appalachian Region--Historical geography.
Appalachian Region--Social conditions.