This unusual and intriguing study of nationhood explores the 19th-century confrontation of ideas that transformed the kingdom of Siam into the modern conception of a nation. Siam Mapped challenges much that has been written on Thai history because it demonstrates convincingly that the physical and political definition of Thailand on which other works are based is anachronistic.
Thongchai Winichakul (1994). Siam Mapped: A History of the Geo-body of a Nation. Honolulu: University of Hawaii Press