Papers include Kagan's correspondence, photographs, printed materials and audio tapes. All letters in the collection date from 1938-39, when he had moved his Petropolis operations to Brussels; there are items by Vladislav Khodasevich, Vladimir Nabokov, and Mikhail Osorgin, and others. Among the photographs are pictures of Ivan Bunin, Konstantin Fedin, and Evgeniĭ Zami︠a︡tin. Printed materials consist chiefly of books published by his firms; some of the books are inscribed, for example by Nikolaĭ Berdi︠a︡ev and Lev Karsavin. Included is a lengthy taped interview of Kagan by Marc Raeff in which Kagan discuses his life and publishing activities.

Papers of Adam Pavlovich Benningsen and his wife Feofanii︠a︡ Vladimirovna Benningsen. This collection contains a substantial number of letters which Adam Benningsen wrote to his wife while serving with the White armies in South Russia during 1919-1921. The bulk of the collection consists of manuscripts by Adam Benningsen: a lengthy memoir of his service in the Tsar's army in World War I and in the White armies in the Civil War; diaries and draft memoirs relating to the same period; memoirs of the fall of France in 1940 and of his own imprisonment, apparently by the Germans, during World War II; and two short manuscripts containing theological reflections. A short memoir of the Revolution by Feofanii︠a︡ Benningsen ("Iz zapisok grafini F. V. Benningsen," 1917)., a collection of White Army poems and songs, and a hand-produced satirical journal emanating from the White Army's camp at Gallipoli (1921) complete the collection. Correspondence: Series of letters from A. P. Benningsen to F. V. Benningsen (1919-1920) and other letters from A. P. Benningsen to F. V. Benningsen (1919-1921). Manuscripts: Diary of Adam P. Benningsen (22 July-4 September, 1914; "Iz zapisok grafini F. V. Benningsen" (1917); Prison diary of A. P. Benningsen (1943); "Razvei gore v golom pole", No. 15, (Gallipoli, 16 June, 1921); Religious reflections of Adam P. Benningsen. Notebooks: Memoirs of Adam P. Benningsen (1914-1921?), 4 notebooks, continuous pagination; Drafts of memoirs and diaries by Adam P. Benningsen; Memoirs of the fall of France by Adam P. Benningsen ("May 1940"); Theological reflections by Adam P. Benningsen. Songs and poems of the White army

Correspondence, manuscripts, subject files, and printed materials of Afrikan P. Bogaevskiĭ. The bulk of the collection concerns emigre Cossacks in Europe, but there are also materials from the Civil War. There are letters from such White Generals as Petr Krasnov, Aleksandr Kutepov, and Petr Wrangel, and many letters from various persons to Bogaevskiĭ's widow after his death. Manuscripts include Bogaevskiĭ's addresses ("obrashchenii︠a︡") to the emigre Cossacks and his memoirs about the Cuban campaign of 1918. Subject files concern the Civil War, emigre Cossacks and related matters. Printed materials touch on Bogaevskiĭ's death and funeral.

Outgoing letters, mostly concerning publication of the American Nation, a twenty-eight volume set edited by Hart, and published between 1904 and 1918.

Most of the collection consists of letters to Golśteĭn; there are some as well to her second husband, Vladimir A. Gol'shtein. The materials reflect Gol'shtein ties to Russian liberalism and populism and also to both French and Russian art and literature. There are groups of cataloged letters from Renʹe Arcos (15), Mykhailo Drahomaniv (52), Andrʹe Fontainas (31), Renʹe Ghil (32), Viacheslav Ivanov (17), Petr Lavrov (49), Vladimir Vernadskii (20), and Maksimilian Voloshin (29). There are also items by Jurgis Baltrušaitis, Henri Martin Barzun, Henri Bergson, Ivan Bunin, Sergei Diagilev, Paul Fort, Vladislav Khodasevich, Aristide Maillol, and Odilon Redon. Manuscripts are chiefly by Golśhteĭn, and include her memoirs on Drahomaniv. There are also poems by Voloshin and by Konstantin Bal'mont. Subject files deal with such topics as the Russian famine of 1891-92 and the Russian Liberation Committee at the time of the Civil War. There is a copy of Gol'shtein's book, "Serf Life in Russia."

These papers consist of correspondence, manuscripts, documents, subject files, photographs, and printed materials. Most of the collection concerns Bashmakov's ethnographical work in France in the 1920s and 1930s, including correspondence, many manuscripts, lectures, notes, and copies of his publications. Subject files concern emigre monarchism in France, and the death of Father Georgiĭ Spasskiĭ. There are copies of the Russian version of Bashmakova's memoirs, "Perezhitoe." Cataloged correspondence in the collection consists of letters from Petr Krasnov and one or two items each from Henry Field, Evgeniĭ Miller, Petr Wrangel, and Boris Zaĭt︠s︡ev. There are also photographic slides representing ethnographical types from the Caucasus.

The papers consist of correspondence, manuscripts, documents, photographs, and printed materials. Manuscripts include notes taken on a speechby General Lavr Kornilov in August 1917; Kolchinskiĭ's writings on the history of the Pavlovsk Military Academy (including a published book by him); and his diaries from the early 1950s. Also included are Kolchinskiĭ's Russian army documents; items relating to his work in the Belgian Congo during World War II; and several photographs of army officers during World War I.

The collection consists of correspondence from such ballet and theater personalities as Sergeĭ Khudi︠a︡kov, Sergeĭ Lifar,́ Nadezhda Nikolaeva-Legat, Alekander Sanin and Vera Trefilova. There is also one letter each from Zinaida Gippi︠u︡s, Nadezhda Teffi, Boris Zaĭt︠s︡ev and Vladimir Zeeler. In addition, there are several typed manuscripts by Pleshcheev, including his book-length biography of E.N. Roschina-Insarova, and clippings of newspaper articles by Pleshcheev.

Meyendorff's papers consist of correspondence, manuscripts, notes, and printed materials. The papers concern Russian statesman Petr Stolypin. The manuscripts (which are in English) are grouped under the title "A Brief Appreciation of P. Stolypin's Tenure of Office," and touch upon many different aspects of his career. Notes and correspondence are also on this topic. Among the correspondents is Vladimir Kokovt︠s︡ov.

Three letters by Fomin concerning merchant and bibliophile Gennadiĭ V. I︠U︡din. The three letters, written by Fomin in Leningrad in Sept.-Oct. 1932, were apparently addresed to Ekaterina Nikanorovna Rozen. Included with the letters are photocopies of items on I︠U︡din: two letters by him to Semen Vengerov (1903 and 1912), a brief autobiography, a receipt, and a pamphlet entitled"Stoimost ́domashneĭ biblioteki G.V. I︠U︡dina.. Svedenie, sostavlennoe Vl.A. T︠S︡aplinym.".