The collection includes correspondence, manuscripts, memoirs, diaries, notes, subject files, documents, photographs, and printed materials. Most of the material in the collection concerns Nikolaev's tenure as military attachʹe at the Russian embassy in Washington. Cataloged correspondents include Mikhail T. Florinsky and Geroid T. Robinson. There is a typescript by Vasiliĭ O. Kli︠u︡chevskiĭ, "Kratkoe posobie po russkoĭ istorii." Among the correspondence are cablegrams and official communications to the Russian embassy during World War I and the revolutionary period. Manuscripts, mostly by Nikolaev, concern contemporary and historical military topics. Diaries and memoirs deal with Nikolaev's travels to Europe during World War I and his activities as military attachʹe. Among orders granted to Nikolaev is the "Order of the Sacred Treasure," signed and sealed by the Japanese Emperor Meiji (1911). Printed materials include many articles by Nikolaev.

Papers of Zi︠a︡blov. Included is a copy of a letter from Moscow in 1919 by Zi︠a︡blov to his daughter, manuscripts, documents, photographs, and other miscellaneous items. Manuscripts include Zi︠a︡blov's travel diary of a trip from Moscow to the Black Sea and the Crimea in 1886, his memoirs, and lectures on engineering. The memoirs discuss his childhood and education (he graduated from Moskovskoe Tekhnicheskoe Uchilishche (Moscow Technical Institute)) in 1887; his work as a teacher and engineer; the 1905 revolution in Kolomna, where he was director of a machine works; and his continued engineering career through World War I and the early Soviet period. There are family photographs and photographs of unidentified groups, including Zi︠a︡blov, standing around locomotives. Also included is a pamphlet by Zi︠a︡blov"K voprosu o nemet︠s︡kom zasilí: Illi︠u︡strat︠s︡ii iz parovozostroĭtelńoĭ praktiki" (Petrograd, 1919).

Correspondence, manuscripts, photographs, and printed materials of Evgenii︠a︡ M. and Pavel A. Bri︠u︡nelli. The bulk of the collection consists of Mrs. Bri︠u︡nelli's 35 diaries, covering the years 1891-1956. The correspondence consists of letters from Mrs. Bri︠u︡nelli's sister in Leningrad from 1922 to the early 1940s. Pavel Bri︠u︡nelli's memoirs are on the emigration in France in the 1920s and 1930s. The printed materials are made up largely of his writings.

The collection consists of a photograph of Sergeĭ M. Lifaŕ correspondence, a diary, manuscripts and memoirs, subject files, documents, military service records and questionnaires, membership registers of the Union of the Knights of St. George (Soi︠u︡z georgievskikh kavalerov), photographs and printed materials. The collection mostly concerns the Russian General-Military Union and the Union of the Knights of St. George. The diary is by Lev L. De-vit on the Civil War. Subject files include materials on the Union of the Knights of St. George and Major-General Ippolit V. Savit︠s︡kiĭ. Service records, military service questionnaires, membership records and photographs deal with members of both organizations. Printed materials include mimeographed bulletins of these organizations and a book listing the recipients of the Order of St. George, dated November 26, 1916.