The collection consists of correspondence, manuscripts, case files, a few subject files, printed material and three caricature drawings of Filonenko. By far the greatest amount of material is in the form of manuscripts and case files. The manuscripts fall into two categories: notes and drafts, written in French, dealing with legal matters, and a diary, containing a large number of clippings, in which Filonenko chronicles and comments upon events in Russia, Eastern and Western Europe during the period 1918-1920. The case files, primarily from the 1930s, contain materials gathered in the process of defending his clients, chiefly Russian emigres, before the French courts. Included among these are the records of Filonenko's defense of Nadezhda Plevitskai︠a︡-Skoblin in the General Miller kidnapping trial in 1937-38.

Correspondence, manuscripts, notes, documents, photographs and printed materials of Frank. The collection reflects almost every aspect of his career, but especially his life in Germany, France, and England after his expulsion from Russia in 1922. Among the correspondents are Nikolaĭ Berdi︠a︡ev, Sergeĭ Bulgakov, Albert Einstein, Georgiĭ Florovskiĭ, Nikolaĭ Losskiĭ, Fedor Stepun, and Petr Struve; there are one or two items each from Vi︠a︡cheslav Ivanov, Bernard Pares, and Alekseĭ Remizov. There are also many letters from Semen Frank and his wife Tati︠a︡na to their son Viktor, and from Peter Struve's family to the Franks. Manuscripts for several of Frank's books are in the collection, such as "Svet vo tḿe" "Realńost ́i chelovek" and "Biografii︠a︡ P.B. Struve." Other manuscript materials by Frank include essays and lectures, outlines of courses he taught as a professor in Russia before his expulsion, and notebooks. There are also two poems by Vi︠a︡cheslav Ivanov. Among the printed works are Frank's Bible and offprints of his articles. There are photographs of Sergeĭ Bulgakov, Fedor Stepun, and of the Frank and Struve families.

The John N. Hazard papers consist of a processed set of 11 boxes, numbered 1-11, and an unprocessed set of 46 boxes, numbered 1-46.

The Ta-Chun Hsu papers (徐大春檔案) document his personal life and provide a glimpse of his career in China and in the United States. The bulk of the papers consist of correspondence related to his family and his personal life as a Chinese-American and an immigrant living in New York. The correspondence also highlights his relation to a prominent Chinese educator and philosopher, Hu Shih (胡適) and his family. There are also materials related to his father, Hsu Singloh (徐新六), who was a major finance and banking leader during the Second Sino-Japanese War. Also included are immigration and travel documents of T.C. Hsu. Other materials also include news clippings, articles, financial records, printed materials, portraits and photographs, maps and postcards.

The Hu Shih diaries comprises six microfilm reels of diaries by Hu Shih, a Chinese philosopher, essayist, educator, scholar, and diplomat of the 20th century. Materials include in the collection are Hu Shih's diaries, which contain correspondence, news clippings, lecture notes, letters dating from 1921 to 1935, as well as the writings of Hu Shih's father, Hu Chuan, who was a civil official of the Qing Imperial Court.

The papers consist of correspondence and notes. The correspondence is made up of letters to I︠A︡khontov concerning his memoirs about the Council of Ministers from pre-revolutionary officials, including Vladimir Kokovt︠s︡ev, Pavel Ignatév, and Vsevolod Shakhovskoĭ. The notes are minutes taken at the meetings of the Council of Ministers; these exist as both the original handwritten notes and as typed copies. Finally, there is a brief memoir by I︠A︡khontov concerning World War I, and a printed copy of the announcement by Nicholas II that World War I had been declared.

Papers include correspondence, notes and manuscripts, and offprints of his many works.

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.

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 papers consist of correspondence, manuscripts, and printed materials. Among the correspondents are Nikolaĭ Arsenév, Anton Kartashev, William K. Matthews, and Aleksandr Meyendorff. There are manuscripts by Kolemin on religious topics. Also included are papers of Kolemin's stepfather, Vasiliĭ Bakherakht, last Imperial ambassador to Switzerland. These consist of correspondence, drafts, and notes by Bakherakht, and the reports of a Russian commission investigating alleged German atrocities in World War I.