Columbia subject headings:
Folk songs--Canada.
Folk songs--United States.
Folklore--United States.
Miners--Songs and music.
Mines and mineral resources--United States.
Harvard subject headings:
Folk songs, English--United States
Folklore--United States
Miners--Songs and music
Miners--United States--Folklore.
Princeton subject headings:
Folk songs, English--United States.
Folklore--United States.
Miners--Songs and music.
Miners--United States--Folklore.