Columbia subject headings:
Art--Private collections--France--Lorraine--History--Congresses.
Book collecting--France--Lorraine--History--Congresses.
Collectors and collecting--France--Lorraine--History--Congresses.
Harvard subject headings:
Collectors and collecting--France--Les Trois-Evêchés--Congresses.
Collectors and collecting--France--Lorraine--Congresses.
Les Trois-Evêchés (France)--History--Congresses.
Lorraine (France)--History--Congresses.
Princeton subject headings:
Collectors and collecting--France--Les Trois-Evêchés--Congresses.
Collectors and collecting--France--Lorraine--Congresses.
Les Trois-Evêchés (France)--History--Congresses.
Lorraine (France)--History--Congresses.