Columbia subject headings:
Appalachians (People)--Bibliography.
Poor--Southern States--Bibliography.
Southern States--Bibliography.
Harvard subject headings:
Appalachians (People)--Bibliography.
Poor--Southern States--Bibliography.
Southern States--Bibliography.
Whites (Southern States)--Bibliography.
Princeton subject headings:
Poor--Southern States--Bibliography.
Southern States--Bibliography.
Whites (Southern States)--Bibliography.