Columbia subject headings:
Bresslau, Helene--Correspondence.
Schweitzer, Albert, 1875-1965--Correspondence.
Harvard subject headings:
Bresslau, Helene, 1879-1957--Correspondence.
Missionaries, Medical--Gabon--Lambaréné (Moyen-Ogooué)--Correspondence.
Musicians--Europe--Biography
Schweitzer, Albert, 1875-1965--Correspondence.
Theologians--Europe--Biography
Princeton subject headings: