Columbia subject headings:
Château Fort de Longueuil (Longueuil, Québec)
Longueuil (Québec)--Buildings, structures, etc.
Longueuil (Québec)--History.
Harvard subject headings:
Château Fort de Longueuil (Longueuil, Québec)
Longueuil (Québec)--Buildings, structures, etc.
Longueuil (Québec)--History.
Princeton subject headings:
Longueuil (Québec)--History.