The article «Leo Tolstoy’s novel “War and Peace” in diaries and letters» subjects to a detailed analysis the letters by L.N. Tolstoy, A.A. Fet, A.I. Ertel, diaries of L.N. Tolstoy and his wife S.A. Tolstoya, as well as letters of A.A Fet, I.S. Turgenev and others, to a greater or lesser extent on the novel «War and Peace». The most significant in number and in content - letter by L.N. Tolstoy, A.A. Fet and writing responses by A.A. Fet. The article stresses that it is from A.A. Fet, as a friend and colleague writers, Tolstoy shared his innermost thoughts, doubts, plans, letters to him talking about numerous overtime novel text and took notes with gratitude the poet. Letters by I.S. Turgenev differed greatly often unjustified, criticism of t...