£1,600
By HYDROGRAPHIC OFFICE, 1st. April, 1881, 1922. Large corrections to 23rd Dec. 1923. Small corrections to 1932.
£5,500
By WADE, Henling Thomas; and Robert Alexis de VILLARD, October, 1893.
£950
By HYDROGRAPHIC OFFICE, New Edition 11th April, 1921. Small corrections to 1923.
£20,000
By HORSBURGH, James, July 1831 corrections to 1841.
£7,000
By WAR OFFICE, GEOGRAPHICAL SECTION, GENERAL STAFF, 1922
£2,500
By JAPANESE HYDROGRAPHIC OFFICE, 1895 [1897].
Hong Kong and Canton from the ‘Secret Atlas’ 

