The papers consist of correspondence, manuscripts, documents, subject files, newspaper clippings, printed materials, photographs, and drawings. Most of the correspondence concerns Bilyi's activities as Ataman, and the journal "Kazak"; other correspondence is personal or relates to the activities of anti-Communist groups (such as the Anti-Bolshevik Bloc of Nations - ABN). The manuscripts include articles, reminiscences, drafts of appeals and proclamations, and speeches mostly concerning the Cossack movement, Cossack history, and the anti-Communist movement. The documents mostly concern KNOD and related organizations for the period ca.1955-1970; a few relate to the Cossacks in 1919-1945. The subject files contain newspaper clippings, printed materials, notes, and correspondence relating to KNOD, ABN, "Kazak", Ukrainian-Cossack relations, and the Vlasov Movement. The newspaper clippings are mostly from Russian and Ukrainian emigre publications. Printed materials include a set of "Kazak" and ephemera of KNOD, ABN, and similar organizations. There are a few photographs showing Bilyi in Cossack dress and also various Cossack emigre organization activities. The paintings and drawings include portraits of Bilyi and his wife, Tatiana Iurievna Bilyi, in national dress (his Cossack, hers Czech), other Cossack leaders, Cossack heraldry, and a map of "Cossackia."

The collection includes correspondence, manuscripts by Melńikov and others, documents, photographs, subject files and printed materials. There is a cataloged letter from George Kennan. Correspondence consists primarily of letters from various members of the Don Cossacks in exile, including General A.P. Bogaevskiĭ, Melńikov, and General V.V. Naumenko. Manuscripts include Melńikov's typescript memoirs "Pochemu 'belye' na i︠u︡ge ne pobedili krasnykh?"(230 p.). Reports, by members of the Don government in exile, are on the economy of Southeast Russia. Photographs and documents concern the Don Cossacks. Subject files primarily cover the Don Cossacks during the Civil War in exile. They include several signed letters and memos by General Denikin dated 1920. The financial records of the Don government in exile cover the years 1921-1926. The bulk of the printed materials consists of issues No. 51-272 (1930-1939) of the journal "Volńoe kazachestvo," published in Prague and later in Paris. Among the printed materials there is also a pamphlet dated 1919 and entitled "Vremennoe polozhenie o grazhdanskom upravlenii v mestnosti︠a︡kh, nakhodi︠a︡schikhsi︠a︡ pod verkhovnym upravleniem glavnokomandui︠u︡schego vooruzhennymi silami na i︠u︡ge Rossii." The majority of the material in the collection concerns the Don Cossacks in emigration.