Columbia subject headings:
Harvard subject headings:
Buckingham (Québec)--History.
Labor unions--Québec (Province)--Buckingham--History.
Working class--Québec (Province)--Buckingham--History.
Princeton subject headings:
Buckingham (Québec)--History.
Buckingham (Québec)--Social conditions.
Labor--Québec (Province)--Buckingham.