Columbia subject headings:
Folk music--United States--Discography--Periodicals.
Folklore--United States--Bibliography--Periodicals.
Folklore--United States--Directories.
Harvard subject headings:
Folk music--United States--Discography.
Folklore--United States--Bibliography.
Folklore--United States--Directories.
Princeton subject headings:
Directories.
Folk music--United States--Discography.
Folklore--United States--Bibliography.
Folklore--United States--Directories.