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, documents, subject files and printed materials. The greater part of the collection concerns the period 1917-22, with a substantial amount of material on the Humanities Fund and Bakhmeteff's friendships with prominent Americans. Cataloged materials include 50 or more letters from John Spargo, Vasilii Maklakov, Ekaterina Kuskova, Frederic Coudert, Georgii L'vov and Michael Karpovich (the last largely concerning the Humanities Fund); there are also a few items by Louis Brandeis, John Foster Dulles, Samuel Gompers, Colonel Edward House, Charles Lindbergh, and Thomas Masaryk. Extensive files of arranged materials include hundreds of letters by Arkadii Zak (who headed the Russian Information Bureau in New York, 1917-22), items to and by Sergei Uget, and official telegrams from 1917-22. There are manuscripts in the collection by Bakhmeteff, Spargo, Uget and Sergei Prokopovich. Subject files chiefly cover the Civil War period, the Paris Peace Conference, the Humanities Fund and Soviet Russia in the early 1920s. Printed materials include pamphlets, journals and clippings. There are also bound reports by different departments of the Russian embassy and mission from 1917 through the 1920s. In addition, the collection contains an oil portrait of Bakhmeteff by the artist Nicolas Becker.

Correspondence, manuscripts, photographs, subject files and printed materials. The correspondence includes letters from Michael Florinsky, Mikhail Karpovich, Bernard Pares, Geroid Robinson and George Vernadsky as well as one each from Lidii︠a︡ Lopukhova, Lewis Mumford and George Orwell. There is abundant correspondence relating to the Cunard Whitestar Line, notably from Anthony Cunard. The manuscripts include drafts of several of Fedotoff-White's books as well as copious notes and book reviews. There are subject files relating to his curriculum vitae, financial affairs, and his university studies. Among the printed materials are books (including several of his own), clippings, pamphlets, and brochures.

These papers consist of correspondence, manuscripts, documents, and printed materials. Most of the correspondence concerns Florinsky's publications and editorial work. Among the correspondents are Boris Bakhmeteff, Michael Karpovich, Aleksandr Meyendorff, Bernard Pares, James T. Shotwell, and Dmitriĭ Svi︠a︡topolk-Mirskiĭ: there are one or two items each from John Dewey, Herbert Hoover, Edwin Seligman, and Harry S. Truman. Manuscripts by Florinsky include his "Russia: A Short History" and some minor articles and book reviews. Other manuscripts include a poem by Bernard Pares and a study by Sergeĭ Prokopovich of the Soviet five-year plan of 1946-50; there is also a photograph of Meyendorff. Documents concern Florinsky's career at Columbia and also include book contracts. Printed materials consist chiefly of reviews of his works and reviews he wrote of others' books.

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.

Correspondence, manuscripts, documents, and printed materials of the Russian writer Vladislav Khodasevich, which were collected by or sent to Karpovich. There are 6 letters by Khodasevich to Karpovich, and 2 to other people. Manuscripts and documents by Khodasevich include poetry, notes, essays, autobiographical information, listings of his publications, earnings, daily work, and references to him in print. Printed materials consist of clippings and an annotated copy of his "Poeticheskoe khozi︠a︡istvo Pushkina" (1924). There are also 2 items in the collection by Raisa Blokh, and 1 by Georgiĭ Ivanov.

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.

The papers consist of correspondence, manuscripts, documents, and printed materials. Correspondence includes 3 letters from Mikhaĭl Karpovich, and letters from Khmelńit︠s︡kai︠a︡'s son Sergeĭ, a writer in the Soviet Union. Among the manuscripts is Khmelńit︠s︡kai︠a︡'s autobiography, which discusses her childhood in Odessa and her education; and her translation of the letters of William Frey, a Russian immigrant in Kansas in the 1870s.

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."