This a magnificent and very large map of Russia, covering from the Black Sea, White Sea through Siberia to Kamchatka.  A great deal of detail is offered on settlements, rivers, lakes, mountains, forests, etc.  While both Kamchatka and Novaya Zemlya are shown, both are miss-shaped and part of northern Siberia East of the Ob River remains unexplored. The map was first issued in 1772 by Robert Sayer.  with a conjectural Alaskan Peninsula and an entirely different configuration for Kamchatka. Five distance scales and extensive legend explains Russian terms used in the map. The map is printed on two, joined sheets as issued, ad carries three titles.