Columbia subject headings:
Rosenstock-Huessy, Eugen, 1888-1973--Correspondence.
Rosenstock-Huessy, Margrit--Correspondence.
Rosenzweig, Franz, 1886-1929--Correspondence.
Harvard subject headings:
Rosenstock-Huessy, Eugen, 1888-1973--Correspondence.
Rosenstock-Huessy, Margrit--Correspondence.
Rosenstock-Huessy, Margrit.
Rosenzweig, Franz, 1886-1929--Correspondence.
Princeton subject headings:
Rosenstock-Huessy, Eugen, 1888-1973--Correspondence.
Rosenstock-Huessy, Margrit--Correspondence.
Rosenzweig, Franz, 1886-1929--Correspondence.