Correspondence and manuscripts of Zaĭt︠s︡ev. This collection covers from the 1920's into the 1960's. There is correspondence from many other emigre writers. The largest groups of cataloged letters are by Mark Aldanov (105 items), Ivan Bunin (161), Archimandrite Kiprian (104), Alekseĭ Remizov (48), and Nadezhda Teffi (101). There are also items by Boris Bugaev (Andreĭ Belyĭ), Vi︠a︡cheslav Ivanov, Vladislav Khodasevich, Sergeĭ Lifaŕ and Boris Pasternak. Zaĭt︠s︡ev's manuscripts in the collection include some of his major works, such as "Puteshestvie Gleba" "Dom v Passi" "Zhizn ́Turgeneva" and "Zhukovskiĭ". In addition, the collection has a book and a pamphlet, both inscribed by Zaĭt︠s︡ev.

Correspondence, manuscripts, documents, photographs and printed materials of Unkovskiĭ. The correspondence includes letters from such individuals as Emile Baës, Vladimir Burt︠s︡ev, Nikolaĭ Evreĭnov, Galina Kuznet︠s︡ova, Boris Lazarevskiĭ, Alekseĭ Remizov, Ivan Shmelov, Boris Zaĭt︠s︡ev, and Leonid Zurov. Nearly all the manuscripts are by Unkovskiĭ, and include essays, stories, and excerpts from his memoirs, many of which were published in emigre journals. There are a number of scrapbooks containing clippings of his articles. In addition, the collection contains galleys of books by Unkovskiĭ, and copies of some of his full-length works, including "Ikary" (1942) and "Andreĭ Klinskiĭ" (1940).