Voyages and travels in various parts of the world, during the years 1803, 1804, 1805, 1806, and 1807 (1813)http://www.archive.org/details/voyagesandtrave00langgoog
by Langsdorff, G. H. von, (Georg Heinrich), 1774-1852
Adam Johann von Krusenstern's map, 1809-1813.
Reise um die Welt in den Jahren 1803, 1804, 1805 und 1806 auf Befehl Seiner Kaiserliche Majesta"t Alexanders des Ersten auf den Schiffen Nadeschda und Newa"
・World Map (Zoom up around Japan)
море Японское (Japan sea)
・Map of Japan 1807. (Zoom up around Strait of Corea )
Hpoanb Kopenckon (strait of Corea)
From the atlas: Atlas Iuzhnogo moria by Captain Kruzensh,1826
1826 Sankt-Peterburg,
General'naia karta Iuzhnogo moria. List 2.(General Map)
O.Дажелемт (Dagelet?)が記載
Аргонаемт(Argonaut) and ДaЖелемт(Dagelet)
Японское море (Japan sea)
Karta poluostrova Koreia. (Map of Korea)
Tchain-chan tau and Fang-lin-tau, Аргонаемт(Argonaut) and ДaЖелемт(Dagelet) 3aanBb Bpoyroha (broughotn bay?)/Hpoanb Kopenckon (strait of Corea)Karta ostrovov Iaponskikh. 1826 (Map of Japan)
Аргонаемт(Argonaut) and ДaЖелемт(Dagelet) 海の記載は特に無し。