Ystoria Mongalorum is a report, compiled by Giovanni da Pian del Carpine, of his trip to the Mongol Empire. Written in the 1240s, it is the oldest European account of the Mongols. Carpine was the first European to try to chronicle Mongol history.
Read more about Ystoria Mongalorum: Background, Ystoria Mongolorum, The Tartar Relation