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 General Georgiĭ E. Berkhman that consist of correspondence, subject files, maps and printed materials. Most of the collection concerns the Sarykamysh campaign against Turkey in late 1914, including telegrams, orders, reports, maps and books. There is also Berkhman's official service record, a brief memoir by his wife Elena Vasilévna, clippings, and copies of Tbilisi newspapers from January 1919.

Papers of Petr S. Makhrov, consisting primarily of extensive manuscript memoirs. Emigrating to France, he became a leading figure in the "Soviet patriotic" movement during and after World War II. His memoirs, in thousands of pages, discuss all aspects of his career. The papers also include correspondence, documents, photographs, and printed materials. There are orders (prikazy) from World War I and the Civil War, and reports and telegrams from his time in Poland. There is a copy of "Russkie v Gallipoli" autographed by Wrangel, and a photograph album entitled "Russkai︠a︡ armii︠a︡ na Balkanakh." Also included is the 1841 report of the director of the Imperial Military Academy in St. Petersburg, General Sukhozanet.

Related materials can be found in the following Bakhmeteff Archive collections: Arkhangel'skii, Kutepov, Lampe, ROVS-North America, and Shatilov.