Columbia subject headings:
Harvard subject headings:
Authors, German--19th century--Correspondence
Wildermuth, Hermann, 1852-1907.
Wildermuth, Ottilie, 1817-1877--Correspondence.
Princeton subject headings:
Authors, German--19th century--Correspondence.
Wildermuth, Hermann, 1852-1907.
Wildermuth,Ottilie 1817-1877--Correspondence.