Columbia subject headings:
Composers--Belgium--Correspondence.
Lekeu, Guillaume, 1870-1894--Correspondence.
Harvard subject headings:
Composers--France--Correspondence
Lekeu, Guillaume, 1870-1894--Correspondence.
Lekeu, Guillaume, 1870-1894--Thematic catalogs.
Princeton subject headings:
Lekeu, Guillaume, 1870-1894--Thematic catalogs.
Lekeu, Guillaume, 1870-1894. Correspondence.