Letters of Russian sovereigns and other persons of the royal family.[4]: Correspondence of the Duchess of Courland Anna Ivanovna

Letters of Russian sovereigns and other persons of the royal family.[4]: Correspondence of the Duchess of Courland Anna Ivanovna / Commission.Printing state.letters and contracts, comp.at Mosk.ch.Arch.Mr. Foreign.cases.- M .: Type.S. Orlova, 1862. -605: Power..Source of an electronic copy: Russian Geographical Society