The collection consists of 22 letters from Nemirovich-Danchenko to Nikolaĭ M. Alekseev; a photograph of Nemirovich-Danchenko, inscribed to Alekseev; and 7 newspaper clippings (Italian and Russian) concerning Nemirovich-Danchenko's theatrical activities.

The papers consist primarily of the manuscripts of books (including "Witte"), articles, and lectures by V.K. Korostovet︠s︡. There are one or two letters each from Dmitriĭ Mendeleev, Maksim Gorḱiĭ, Pavel Skoropadskiĭ, Boris Pilńi︠a︡k, Konstantin Pobedonost︠s︡ev, Hilaire Belloc, Evelyn Waugh, Rudyard Kipling, John Maynard Keynes, Pavel Mili︠u︡kov, and Lewis Mumford.

The papers contain correspondence, reports, and financial records. The materials almost entirely date from 1919-22 and concern the Civil War and its immediate aftermath. There are several letters from General Nikolaĭ I︠U︡denich to Pilkin, and many letters and reports which passed between Pilkin and his assistants. The majority of the collection is made up of financial records, such as income and disbursements for the "Morskai︠a︡ organizat︠s︡ii︠a︡" in Paris (1919-22), and the "Morskoĭ fond" in Helsinski (1920-24); and subsidies disbursed to White naval personnel living in Estonia (1920-23).

Correspondence and documents of Vladimir M. and Marii︠a︡ S. Urusov. Some of the letters are from other Russian emigres, while some appear to be from Russia. Related items include the Urusovs' passport.

Correspondence, manuscripts, documents, a subject file, and printed materials. Much of the collection consists of manuscripts and memoirs by V. M. Andreevskii: his memoirs up to 1917; memoirs of a trip to Palestine in 1881; and his diary for 1919-1931. Also included is a typescript copy of the memoirs of historian Boris Chicherin, entitled "N.I. Krivtsov." Many of the printed materials concern the Orthodox Church in emigration. Another item, dated 1885, is: "Spravochnaia kniga (instruktsiia) dlia rukovodstva gorodovym i voobshche nizhnim politseiskim sluzhiteliam."

Letters sent to Fel'kner by the following persons: Konstantin Alekseev, better known as Konstantin Sergeevich Stanislavskii, one of the founders of the Moscow Art Theatre; Fedor Gorev; Ol'ga Knipper-Chekhova, wife of the writer Anton Chekhov; and M. G. Savina.

Correspondence, manuscripts, photographs, subject files and printed material of Vladimir M. Zenzinov (1880-1953), writer, member of the Socialist Revolutionary Party and émigré activist first in France and, after 1940, in the United States.

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).

Collection includes 67 letters and telegrams, by Alexander's older brother Nikolaĭ; 65 letters and notes, some copies, by Nicholas II, from 1902-1913; a drawing and notes by Alexander III; and drafts of letters by Meshcherskiĭ. Also included is a group of letters in different hands hitherto identified as having been written by Nikolaĭ, Duke of Leuchtenberg, to Meshcherskiĭ.

Correspondence, manuscripts, notes, documents, photographs, subject files, art reproductions, and printed materials of Vladimir Veidle (also known as Vladimir Vasilʹevich Weidlé, 1895-1979), Russian critic of art and literature, writer and scholar.