Columbia subject headings:
Hahn-Hahn, Ida, Gräfin, 1805-1880--Criticism and interpretation.
Harvard subject headings:
Hahn-Hahn, Ida, Gräfin, 1805-1880--Criticism and interpretation.
Princeton subject headings:
Hahn-Hahn, Ida, Gräfin, 1805-1880--Criticism and interpretation.