Печатный источник:Atlante novissimo. 4 vols. Venice, 1779 –1785. “La Tartaria Indipendente ” Vol. IV, no. 13. Zatta is not well known as a map publisher although his four-volume atlas contains 214 maps. They are distinguished more for their clarity and artistic quality than for originality. Two of the maps portray Asiatic Russia including this one of Independent Tartary which was nominally a part of the Russian empire.