Manuscripts and related materials on the siege of Port Arthur during the Russo-Japanese War, collected by Boris Ivanovich Bok. Included are diaries and memoirs by Russian participants in the siege: Dmitrii Grigor'evich Androsov (Diary), Oskar Fabianovich Berg (Memoirs), Vladimir Ferdinandovich Berg (Memoirs), Aleksandr Viktorovich Fok ("Zametki"), Nikolai Viktorovich Ienish (Memoirs), Aleksei Mikhailovich Iuzefovich (Memoirs), Vladimir Nikoalevich Nikitin (Diary), Aleksandr Apollonovich Vorob'ev (Memoirs). Some of the memoirs and diaries were published in: "Port-Arthur, Vospominaniia uchastnikov" (New York, 1955).