Sayer Map of Russian Empire, 1790

Unknown.
European Part of the Russian Empire.
Engraved map.
Robert Sayer, 1788-1790.
42 ½" x 52 ½" sheet.
from the maps published by the Imperial Academy at St. Petersburg, with the new provinces on the Black Sea. // The Asiatic Part of the Russian Empire from the maps published by the Imperial Academy at St. Petersburg; with the new discoveries of Captn. Cook &c." Map 21 from Sayer's General Atlas of 1790 being two separately published maps joined together to form a wall map of the entire Russian Empire at the time of Catherine the Great.