Columbia subject headings:
Harvard subject headings:
Labor movement--United States--Songs and music--Discography--Catalogs.
Oberlin College. Conservatory of Music. Library--Catalogs.
Working class--United States--Songs and music--Discography--Catalogs.
Princeton subject headings:
Labor--United States--Songs and music--Discography.
Working class--United States--Songs and music--Discography.