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A journey through Russia into Persia : by two English gentlemen, who went in the year 1739, from Petersburg, in order to make a discovery how the trade from Great Britain might be carried on from Astracan over the Caspian. To which is annex'd, a summary account of the rise of the famous Kouli Kan, and his successes, till he seated himself on the Persian throne. Public Domain Mark. Source: Wellcome Collection.