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.

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.