Columbia subject headings:
Ardeschah, Jean Paul von--Correspondence.
Hauptmann, Carl, 1858-1921--Correspondence.
Harvard subject headings:
Ardeschah, Jean Paul von--Correspondence.
Hauptmann, Carl, 1858-1921--Correspondence.
Princeton subject headings:
Ardeschah, Jean Paul von--Correspondence.
Hauptmann, Carl, 1858-1921--Correspondence.
Personal correspondence.