Columbia subject headings:
Authors, Czech--20th century--Correspondence.
John, Jaromír, 1882-1952--Correspondence.
Harvard subject headings:
Authors, Czech--20th century--Correspondence.
Authors, Czech--Biography.
John, Jaromír, 1882-1952--Correspondence.
John, Jaromír, 1882-1952--Friends and associates.
Princeton subject headings:
Authors, Czech--20th century--Correspondence.
John, Jaromír, 1882-1952--Correspondence.