Columbia subject headings:
Authors, Russian--19th century--Correspondence.
Tolstoy, Leo, graf, 1828-1910--Correspondence.
Zheltov, F. A. (Fedor Alekseevich), 1859-1937--Correspondence.
Harvard subject headings:
Authors, Russian--19th century--Correspondence
Tolstoy, Leo, graf, 1828-1910--Correspondence.
Zheltov, F.A. (Fedor A.)--Correspondence.
Princeton subject headings:
Authors, Russian--19th century--Correspondence.
Tolstoy, Leo, graf, 1828-1910--Correspondence.
Zheltov, F.A. (Fedor A.)--Correspondence.