Columbia subject headings:
Authors, German--19th century--Correspondence.
Catholic Church--Germany--Mainz (Rhineland-Palatinate)
Christian converts--Germany--Mainz (Rhineland-Palatinate)
Hahn-Hahn, Ida, Gräfin, 1805-1880--Correspondence.
Hahn-Hahn, Ida, Gräfin, 1805-1880--Criticism and interpretation.
Moufang, Christoph, 1817-1890--Correspondence.
Harvard subject headings:
Authors, German--19th century--Correspondence
Catholic Church--Germany--Mainz (Rhineland-Palatinate)
Christian converts--Germany--Mainz (Rhineland-Palatinate)
Hahn-Hahn, Ida, Gräfin, 1805-1880--Correspondence.
Hahn-Hahn, Ida, Gräfin, 1805-1880--Criticism and interpretation.
Moufang, Christoph, 1817-1890--Correspondence.
Princeton subject headings:
Authors, German--19th century--Correspondence.
Catholic Church--Germany--Mainz (Rhineland-Palatinate).
Christian converts--Germany--Mainz (Rhineland-Palatinate).
Hahn-Hahn, Ida, Gräfin, 1805-1880--Correspondence.
Hahn-Hahn, Ida, Gräfin, 1805-1880--Criticism and interpretation.
Moufang, Christoph, 1817-1890--Correspondence.
Personal correspondence.