Columbia subject headings:
Harvard subject headings:
Catholic Church--Germany--History--19th century--Sources.
Catholics--Germany--Correspondence.
Clergy--Germany--Biography
Clergy--Germany--Correspondence.
Wessenberg, Ignaz Heinrich von, 1774-1860--Correspondence.
Wessenberg, Ignaz Heinrich von, 1774-1860--Diaries.
Wessenberg, Johann Philipp, Freiherr von, 1773-1858--Correspondence.
Princeton subject headings:
Wessenberg, Ignaz Heinrich von, 1774-1860.