There are letters from fellow historians, such as John Franklin Jameson and Aleksandr Lappo-Danilevskiĭ; Kadet Party leaders, including Vladimir D. Nabokov and Nikolaĭ Astrov; and others such as Boris Bakhmeteff, Charles Crane, Vladimir Jabotinsky, Louis Marshall, Thomas Masaryk, and Nikolaĭ Roerich. A large correspondence series consists of letters and petitions sent to Miliukov during the Third State Duma (1907-12). Manuscripts include Mili︠u︡kov's memoirs, and his notebooks from the period of the Civil War. There is also a manuscript by Isaak Shkovskiĭ (pseudonym -- Dioneo) on Russian writers and journalists during World War I. Subject files deal with the State Duma, the Civil War, and the emigration.