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will be found below of the Russian books, periodicals, original documents, and manuscripts that I have read or consulted in the preparation of these volumes. It comprises only Russian literature, and it makes no pretension, of course, to completeness in any of its departments, but it may be useful to non-Russian students, and it will serve, at any rate, to indicate the limitations of my own knowledge. A complete bibliography of the Russian literature relating to Siberia and the Exile System would probably fill a thousand octavo pages of close print. To the books, manuscripts, and periodicals named in this list I have made a classified subject-index of about 10,000 cards.