Columbia subject headings:
Bloch, Karola--Correspondence.
Philosophers--Germany--Correspondence.
Teller, Jürgen--Correspondence.
Unseld, Siegfried--Correspondence.
Women architects--Germany--Correspondence.
Harvard subject headings:
Bloch, Karola--Correspondence.
Germany--History--20th century.
Germany--Politics and government--20th century
Philosophers--Germany--Correspondence
Teller, Jürgen--Correspondence.
Unseld, Siegfried--Correspondence.
Women architects--Germany--Correspondence.
Princeton subject headings:
Bloch, Karola--Correspondence.
Philosophers--Germany--Correspondence.
Teller, Jürgen--Correspondence.
Unseld, Siegfried--Correspondence.
Women architects--Germany--Correspondence.