Columbia subject headings:
Authors, German--20th century--Biography.
Ehrenberg, Paul, 1876-1949--Friends and associates.
Mann, Thomas, 1875-1955--Friends and associates.
Painters--Germany--20th century--Biography.
Harvard subject headings:
Ehrenberg, Paul, 1876-1949--Correspondence.
Ehrenberg, Paul, 1876-1949--Friends and associates.
Mann, Thomas, 1875-1955--Correspondence.
Mann, Thomas, 1875-1955--Friends and associates.
Princeton subject headings:
Authors, German--20th century--Biography.
Ehrenberg, Paul, 1876-1949--Friends and associates.
Mann, Thomas, 1875-1966--Friends and associates.
Painters, German--20th century--Biography.