In A New Chart of the China Sea with Its Several Entrances, a map published in Britain, a crescent-shaped atoll (i.e., Huangyan Dao) was marked to the west of the three atolls beyond the west coast of Luzon, with the annotations "Scarborough Shoal" and "the Negroes Head."
Map of the Philippine Islands was prepared in 1906 by Caspar W. Hodgson the American according to the Treaty of Paris.
In 1908, Caspar W. Hodgson asked A. Briesemeister to prepare and carve a larger map of the Philippine Islands in accordance with the Treaty of Paris, which was published in New York.
Map of Republic of the Philippines was printed by the Government of the Philippines in 1961.