Title: Neizvestnostʹ budushchego
Subjects: Diaries, Correspondence, Family, Families, Russian Authors
People: Georgiĭ Ėfron (1925-1944?), Marina T͡Svetaeva (1892-1941), Sergeĭ Ėfron (1893-1941), Marina T︠S︡vetaeva (1892-1941), Georgij Ėfron (1925-1944)