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, organizational records, and accounts of the Soi︠u︡z Russkikh Pisateleĭ i Zhurnalistov v Parizhe (Union of Russian Writers and Journalists in Paris). The correspondence (ca. 1920-1951) primarily deals with organizational subsidies and events, and includes letters from such writers as Mark Aldanov, Ivan Bunin, Mikhail Fedorov, Mikhail Osorgin, Alekseĭ Remizov, Nadezhda Teffi, Marina T︠S︡vetaeva and Boris Zaĭt︠s︡ev (the president of the organization) among others. There are manuscripts by Vladimir Zeeler and Sofii︠a︡ Anichkova-Taube as well as photographs of several members of the organization. The financial records include receipts for subsidies and general financial statements covering the 1920-1950 period. The organizational records concern Union balls, publications, and other activities. There are also folders of miscellaneous notes and clippings.