The collection consists of correspondence, manuscripts, documents, a photograph, and printed material, primarily from the period 1941-1957. Included are letters from Ivan Bunin, Marc Chagall, Mikhail Karpovich, Vasiliĭ Maklakov, W. Somerset Maugham, Vladimir Nabokov, Ili︠́a︡ Repin, Edmund Wilson, Boris Zaĭt︠s︡ev and many others. Manuscripts of his works include "Istoki""Nachalo kont︠s︡a""Zhivi, kak khochesh"́, and "The Escape" (English translation of "Begstvo"), such shorter tales as "Noch ́v terminale""Povest ́o smerti", and "Ulḿskai︠a︡ noch"́, as well as numerous articles, book reviews and essays. There are financial records for "Novyĭ Zhurnal", which Aldanov helped found, and the clippings are mainly articles about Aldanov. There is one late photograph of Aldanov.

Correspondence, manuscripts, and documents created during Baikalov's sojourn in England, from about 1918 on. There is correspondence with major Russian emigres such as Aleksandr Guchkov, Aleksandr Kerenskii, Boris Nikolaevskii, and Marc Slonim, and with British figures such as Malcolm Muggeridge, the Duchess of Atholl, Sir Bernard Pares, and Sidney Webb.

Letters received by A. V. Bakhrakh which discuss 20th century Russian literature, contemporary Slavic studies, and Russian emigre publishing activities. Correspondents include Andrei Belyi (Boris Bugaev), Ivan Bunin, Kornei Chukovskii, Andre Gide and Boris Pilniak. There are over 300 letters by Gleb Struve wtitten from 1964 to 1983, which cover the above topics as well as Struve's personal and professional life. There are both letters and manuscripts by Vladislav Khodasevich, Aleksei Remizov and Marina Tsvetaeva.

Correspondence, manuscripts, photographs, subject files and printed materials of Burt︠s︡ev. The correspondence includes letters from Mark Aldanov, Anton Denikin, Sergeĭ Melǵunov, Boris Nikolaevskiĭ, Maurice Paleòlogue, Sergeĭ Shtern, I︠A︡kov T︠s︡vibak, Mark Vishni︠a︡k and Vladimir Zeeler. Among the manuscripts are two essays by Burt︠s︡ev as well as numerous notes and manuscript fragments. There are several photographs of Burt︠s︡ev. The subject files include materials on "Byloe", items concerning Burt︠s︡ev's own archive, and materials on "Obshchee delo.".

The collection chiefly consists of Goldenweiser's American legal case files. There are also case files from his German years, and substantial materials on his research into the condition of Russian refugees and refugee problems in general in the 1930s. Much of the correspondence from the late 1930s and early 1940s concerns Jews in Germany and occupied Europe. Correspondents in the collection include Mark Aldanov, Abraham Cahan, Antal Dorati, Georgiĭ Florovskiĭ, Tatʹi︠a︡na Frank, Vladimir and Vera Nabokov, and Mikhail Karpovich; there are 1 or 2 items each from Dwight D. Eisenhower, Eleanor Roosevelt, Herbert Lehman, and Nikolaĭ Losskiĭ. Letters, manuscripts, and documents by Vera Nabokova contain considerable information on her and her husband's lives in Germany and in the United States. Many of the American case files concern (as does much of the Nabokova material) individual claims for reparations from Germany after World War II.

The papers comprise correspondence, documents, institutional files, writings, lectures, memoirs, research notes, photographs, third party materials, printed materials, periodicals, microfilms, audio material, and digital files accrued by historian and professor emeritus of Columbia University, Leopold H. Haimson, during his professional life.

Correspondence, manuscripts, lectures, lecture notes, and subject files of Russian-American historian Mikhail Mikhailovich Karpovich (1888-1959). Karpovich was an employee of the embassy of the Russian Provisional Government in Washington, D.C., Professor Emeritus of Russian History and Literature at Harvard University, and founding editor of Novyĭ zhurnal.

The Aleksandr Kazem-Bek Papers consist of correspondence, family and personal documents, writings, lectures, notes, manuscripts, photographs, printed materials, and research materials related to the life and professional and political activities of Aleksandr Kazem-Bek – Russian émigré social and political activist, founder and leader of the "Union of Young Russia" ("Mladorossy"), professor of Russian language and literature, and journalist. The collection contains significant documents of the "Mladorossy" movement.

Correspondence, manuscripts, photographs, and printed materials. Cataloged correspondents in the collection include letters from prominent figures, including Mark Aldanov, Mark Vishniak, and others. Among the manuscripts are A. Argunov's, "Iz perezhitogo," on Russian socialists in 1914-1917; a report by Kovarskii read to the Society of Russian Doctors in France, 1940 (Obshechestvo Russkikh Vrachei im. Mechnikova); and items on Soviet themes by Mark Vishniak, dated 1965-67. There is a photograph of Il'ia Fondaminskii, of Aleksandr Kerenskii, and of members of the Russian Constituent Assembly in France, 1922. One subject file concerns the death of Vladimir Zenzinov. Printed materials include catalogs and book lists from "Rodnik."

Collection includes correspondence, manuscripts, notes, documents, financial records, photographs, subject files and printed materials. There are notes from Evgeniĭ Chirikov and Aleksandr Kuprin, and the autographs of Mark Aldanov, Ivan Bunin, and Nikolaĭ I︠U︡denich. There are manuscripts and notes by Mashukov and others, chiefly on the Civil War. Subject files also touch on the Civil War, as does much of the printed material.