Columbia subject headings:
Curtius, Ernst Robert, 1886-1956--Correspondence.
Warburg Institute.
Harvard subject headings:
Curtius, Ernst Robert, 1886-1956--Correspondence.
Humanities--Study and teaching--England--London--History--20th century.
Institution libraries--England--London--History--20th century.
Learned institutions and societies--England--London--History--20th century.
Romanicists--Germany--Correspondence.
Warburg Institute--History.
Warburg Institute. Library--History.
Princeton subject headings:
Curtius, Ernst Robert, 1886-1956--Correspondence.
Warburg Institute.