Most of the collection consists of manuscripts by Lebedev and others on Russian and East European literary and political topics from about 1914 to the 1930s. There are three microfilm reels of materials on Gavrilo Princip and the asassination of Archduke Ferdinand in Sarajevo, 1914. Correspondents include Hamilton Fish Armstrong and George F. Kennan. There are several drafts of articles by Mark Slonim and materials on the Socialist Revolutionaries in the emigration from about 1930. Lebedev's personal documents cover from his army service (the Russo-Japanese War), through the 1917 Revolution and Civil War, and his later life in Europe and the United States. There are photographs from interwar Albania and Bulgaria, including ones of Aleksandŭr Stamboliski. Printed materials include a copy of Lebedev's book "Novym putem" and issues of "Voli︠a︡ Rossii.".

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).

The collection consists of correspondence, manuscripts, and an enormous number of notecards (that were collected over a twenty-year period for a proposed "Slovar' russkikh khudozhnikov") and several dozen notebooks containing entries to which the cards refer. Among the correspondents is Eugène Fabergé, whose letters contain information about the Fabergé dynasty of jewelers. Sakharov's manuscripts include essays on Ivan Bilibin, M. V. Rudaltsov, Mariia Bashkirtseva, Nikolai Globa and V. E. Borisov-Musatov. The cards containing information on artists are arranged alphabetically by artist and contain references to specific notebook entries. There are also bibliographic cards containing citations of articles on art in Russian and other languages. These are arranged by author. The notebooks are largely devoted to a particular artist or genre; others are designated by color and number, letter, number or not titled at all. There are also two sets of large notebooks which seem to belong to another series. There are a few photographs of artists (notably a 1939 photograph of Globa) and photographic reproductions of works by Bakst and Lukin among others. The collection contains approximately 11 exhibition catalogues dating from 1915 to 1940 and primarily relating to the exhibitions of Russian emigre artists in Paris. There are also 4 issues of "Illiustrirovannaia Rossiia" and some clippings dealing with Russian emigre artists.