Columbia subject headings:
Authors, Swiss--20th century--Correspondence.
Glauser, Friedrich, 1896-1938--Correspondence.
Ruckteschell, Elisabeth von--Correspondence.
Harvard subject headings:
Authors, Swiss--20th century--Correspondence
Glauser, Friedrich, 1896-1938--Correspondence.
Ruckteschell, Elisabeth von--Correspondence.
Princeton subject headings:
Authors, Swiss--20th century--Correspondence.
Glauser, Friedrich, 1896-1938. Correspondence.
Ruckteschell, Elisabeth von--Correspondence.