Columbia subject headings:
Harvard subject headings:
Authors, Russian--19th century--Archives.
Authors, Russian--19th century--Correspondence
Authors, Russian--20th century--Archives.
Authors, Russian--20th century--Correspondence
Criticism--Russia--History--Sources.
Institut literatury (Pushkinskiĭ dom)
Russian literature--19th century--History and criticism--Sources.
Russian literature--20th century--History and criticism--Sources.
Princeton subject headings:
Authors, Russian--19th century--Archives.
Authors, Russian--19th century--Correspondence.
Authors, Russian--20th century--Archives.
Authors, Russian--20th century--Correspondence.
Russian literature--19th century--History and criticism--Sources.
Russian literature--20th century--History and criticism--Sources.