Columbia subject headings:
Benjamin, Walter, 1892-1940--Friends and associates.
Brecht, Bertolt, 1898-1956--Friends and associates.
Harvard subject headings:
Benjamin, Walter, 1892-1940
Brecht, Bertolt, 1898-1956
Princeton subject headings:
Benjamin, Walter, 1892-1940--Friends and associates.
Brecht, Bertolt, 1898-1956--Friends and associates.