The voyages and travels of the ambassadors sent by Frederic Duke of Holstein, to the Great Duke of Muscovy and the King of Persia. London, For John Starkey and Thomas Basset, 1669.

Olearius was secretary to the embassy sent out by the duke of Holstein in 1633 –34 to explore commercial opportunities in Persia and Russia. This map shows a portion of the course of the Volga River in great detail.