Outline map of the Tang empire in 661, when it reached its greatest extent.
Own work

Boundaries from
Twitchett, Denis and Wechsler, Howard J. (1979), "Kao-tsung (reign 649-83) and the Empress Wu: The Inheritor and the Usurper", in Denis Twitchett and John Fairbank (eds.), The Cambridge History of China, Volume 3: Sui and T'ang China, 589–906, Part I, Cambridge University Press, ISBN 978-0-521-21446-9, Map 8, p. 281.
Blunden, Caroline and Elvin, Mark (1983), Cultural Atlas of China, Oxford: Phaidon Press, ISBN 0-7148-2309-0, pp. 92–93.
Shin,  Michael D. , ed.  (2014)  Korean History in Maps, Cambridge University Press, pp. 39, 47  ISBN:  978-1-107-09846-6.  (pre-conquest extent of Baekje, approximating the extent of the Ungjin Commandery)
Coastline and lakes from Natural Earth 1:50m Physical Vectors
Conversion to SVG using svgis
Kanguole