Definition of "Tokio"

I also thank Mr. Charles Lanman, Secretary of the Legation of Japan in Washington, for four ferrotypes taken in Seoul in 1878 by members of the Japanese embassy ; Mr. D. R. Clark, of the United States Transit of Venus Survey, for four photographs of the Corean villages in Russian Manchuria ; Mr. R. Idéura, of Tōkiō, for a set of photographs of Kang-wa and vicinity, taken in 1876, and Mr. Ozawa Nankoku, for sketches of Corean articles in Japanese museums.

1882, William Elliot Griffis, “Preface”, in Corea: The Hermit Nation‎, New York: Charles Scribner's Sons, page vii‎

[…] and making him think of those pallid jade-faced painters of Tokio who, through the medium of an art that is necessarily immobile, seek to convey the sense of swiftness of motion.

1891, Oscar Wilde, The Picture of Dorian Gray