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.

Her memoirs recount her childhood and education in Russia as a member of a Baltic-German family, her life in Finland after the February Revolution, her service as a nurse in St. Petersburg during World War I, and as a member of a Red Cross mission charged with caring for prisoners of war in Kiev and Moscow during the Civil War. She also describes her arrest and imprisonment in 1919 as well as her brother's experiences in Li︠u︡bi︠a︡nka prison during World War II. The memoirs (416p.) are in the form of a carbon copy typescript and are accompanied by original photographs. Also included in the collection are reprints of several articles published by her husband, Helmuth Stegman, in the 1960's.

The papers consist of manuscripts, photographs, and printed materials. Among the manuscripts are his typescript memoirs entitled "Vstrechi na zhiznennom puti" (53 pp.), which discuss his youth, student days in the history faculty of Moscow University, his work in the Constitutional Democratic (Kadet) Party, and the 1917 Revolution; and manuscripts of articles, some concerning the emigre monarchist movement. There are four photographs of Efimovskiĭ. Printed materials include offprints of his articles.

The collection consists of correspondence, manuscripts by Messner and others, memoirs by Messner, photographs and printed materials. Manuscripts by Messner include a typescript (275 p.) entitled "Nekotorye prichiny porazhenii︠a︡ Germanii v voĭnu 1939-1945 g.g." Messner's memoirs (3293 p. and 350 p.) cover the years 1914-1973. Included among them are clippings, photographs, mimeographed materials and pamphlets. The majority of his memoirs concern World War I and the Civil War. Photographs are mostly copies. Printed materials consist mostly of clippings of articles by Messner in South American monarchist periodicals.

Correspondence, manuscripts, documents, photographs, subject files, printed materials, and memorabilia of historian George Vernadsky (Georgii Vladimirovich Vernadskii; 1887-1973). Most of the collection consists of his personal and professional papers, circa 1918-1973. Sizable groups of materials also concern members of his family, especially his wife Nina (1884-1971); his father, scientist Vladimir I. Vernadskii (1863-1945); his mother Nataliia E. Vernadskaia (1860-1943); and his sister Nina V. Toll' (1898-circa 1976).

Manukhin's papers consists of correspondence, manuscripts, printed materials, and a photograph. The bulk of the papers are manuscripts, in particular Manukhin's memoirs and a medical work, "Auto-Dʹefense de lʹOrganisme." The memoirs deal with Manukhin's medical studies at the Military-Medical Academy in St. Petersburg (Voenno-Medit︠s︡inskai︠a︡ Akademii︠a︡); his medical practice (among his patients was Maksim Gorḱiĭ); the period of the Revolution and Civil War in Petrograd; and his emigration to France. Printed materials consist of works by Manukhin. Manukhin's wife, Tatʹi︠a︡na, was editor of Metropolitan Evlogiĭ's memoirs ("Puti moeĭ zhizni"), and some of the correspondence touches on that work.

Manuscripts, a document, photographs and printed material of Voront︠s︡ev-Veli︠́a︡minov. The memoirs cover the 1917-1920 period, including his work in armament factories, his travels throughout Russia, and his eventual emigration to Serbia. There is a detailed curriculum vitae dated 1924, a number of photographs of Belgium, and several clippings and handwritten excerpts from newspaper articles.

The papers include correspondence, manuscripts, documents, printed materials, and photographs. Much of the correspondence concerns "Reka Vremen." Cataloged correspondents are Georgiĭ Adamovich, George Kennan, Vasiliĭ Maklakov, I︠U︡liĭ Margolin, Sofii︠a︡ Pregeĺ Harrison Salisbury, I︠U︡riĭ Terapi︠a︡no, Nikolaĭ Uli︠́a︡nov, and Edmund Wilson. There are manuscripts of several stories by Olǵa, and of her biography of Vladimir; also included are the memoirs of N.N. Savvin about the St. Petersburg Polytechnic Institute. Printed materials include articles about Vladimir and his obituaries. There is a photograph of the "Normandie" coming into an American port in the 1930s.