Columbia subject headings:
Harvard subject headings:
Artists--United States--Correspondence.
Authors, American--20th century--Correspondence
Bloch, Albert--Correspondence.
Nobility--Czech Republic--Correspondence.
Nádherná von Borutin, Sidonie, Freiin, 1885-1950--Correspondence.
Personal correspondence.
Princeton subject headings:
Bloch, Albert--Correspondence.
Nádherná von Borutin, Sidonie, Freiin, 1885-1950--Correspondence.