Seven books of Commentary on the deeds of Charles Gustav, the King of Sweden.

Full title: "De rebus a Carolo Gustavo Svecias rege gestis commetariorum libri septem".

Seven Books of Commentary on the Deeds of Charles Gustav, the King of Sweden by Samuel Pufendorf (1632–1694), German historian, jurist, diplomat and historiographer of the King of Sweden Charles XI, is a source of information about the 1655-1660 war between Sweden and the Polish Lithuanian Commonwealth. It discusses the treaty signed by Lithuanian noblemen, led by the Grand Hetman of the Grand Duchy of Lithuania Janusz Radziwiłł (1612–1655), and the Vicegerent of the King of Sweden Magnus Gabriel De la Gardie (1622–1686) on 20 October 1655 in Kėdainiai. It also includes the text of the Treaty of Oliva, which was signed on 3 May 1660 by the Polish Lithuanian Commonwealth and Sweden, and ended the war. The book is illustrated with historical scenes and maps of cities, scenes from battles, and a map of the Kingdom of Poland and Grand Duchy of Lithuania with the coats of arms of the Voivodeships. Most of the engravings were made by the Swedish war engineer, artist and cartographer Erik Dahlbergh (1625–1703).