Columbia subject headings:
Hannon, Théodore, 1851-1916--Correspondence.
Huysmans, J.-K. (Joris-Karl), 1848-1907--Correspondence.
Novelists, French--19th century--Correspondence.
Harvard subject headings:
Hannon, Théodore, 1851-1916--Correspondence.
Huysmans, J.-K. (Joris-Karl), 1848-1907--Correspondence.
Novelists, French--19th century--Correspondence.
Princeton subject headings:
Authors, French--19th century--Correspondence.
Hannon, Théodore--Correspondence.
Huysmans, J.-K. (Joris-Karl), 1848-1907--Correspondence.