Columbia subject headings:
Harvard subject headings:
Labor unions--Canada--History--Sources--Bibliography--Catalogs.
Labor unions--Canada--Manuscripts--Catalogs.
National Archives of Canada. Manuscript Division--Catalogs.
Princeton subject headings:
Archival resources--Canada.
Catalogs.
Labor unions--Canada--Archival resources.
Labor unions--Canada--History--Manuscripts--Catalogs.
Labor unions--Canada--History--Sources--Catalogs.