Columbia subject headings:
Harvard subject headings:
Authors, German--19th century--Correspondence
Freytag, Gustav, 1816-1895--Correspondence.
Molinari, Theodor, 1803-1867--Correspondence.
Princeton subject headings:
Freytag, Gustav, 1816-1895--Correspondence.
Molinari, Theodor, 1803-1867--Correspondence.
Personal correspondence.