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

Correspondence, manuscripts, photographs and subject files of Witte. The correspondents include Ivan S. Aksakov, Tsar Aleksander III, Tsar Nicholas II, Konstantin P. Pobedonost︠s︡ev, I︠U︡riĭ Samarin, Lev N. Tolstoĭ and Kaiser Wilhelm II. The manuscripts, which constitute over half of the collection, consist of Witte's memoirs and of his work on the Russo-Japanese War, and include a signed typescript essay by Lev N. Tolstoĭ. The photographs depict the signing of the Portsmouth Treaty ending the Russo-Japanese War (Portsmouth, N.H.). The subject files, which are primarily typescript copies of documents, refer to such topics as the various assassination attempts on the tsars, questions of agrarian reform, relations with Germany, and the siege of Port Arthur. There is also a framed pen and ink drawing depicting an event in Witte's public career.

Lists, subject files, photographs, etchings and printed materials relating to the Pazheskii Korpus (imperial Corps of Pages), a school for the sons of the Russian nobility founded in 1802, and the Soiuz Pazhei (Union of Pages), the emigré alumni organization founded in 1920. The materials were collected by representatives of the Union of Pages. The collection consists chiefly of mimeographed newsletters, books, printed mementoes, such as programs, menus, tickets, and school forms, and of pictorial materials, especially photographs and etchings. The great majority of the materials pertain to the Imperial Corps of Pages and to Russia's imperial family, and include many unusual photographs portraying school life and the life of the family of Nicholas II. There are also old photographs of Moscow, St. Petersburg, and Tsarskoe Selo, printed reports of the State Council for 1894-99, newsletters published by the Union of Pages and miscellaneous Russian and foreign publications, originally part of the library of the museum of the Union of Pages in Paris.

Collection includes 67 letters and telegrams, by Alexander's older brother Nikolaĭ; 65 letters and notes, some copies, by Nicholas II, from 1902-1913; a drawing and notes by Alexander III; and drafts of letters by Meshcherskiĭ. Also included is a group of letters in different hands hitherto identified as having been written by Nikolaĭ, Duke of Leuchtenberg, to Meshcherskiĭ.