£75,000
By Yu Chong (Qing dynasty), 4th year of the Guangxu reign (1878)
£9,000
By GORDON, Lieutenant Colonel Charles George, 1865.
£1,250
By HYDROGRAPHIC OFFICE, New Edition 19th February, 1923.
£2,800
By HYDROGRAPHIC OFFICE, New Edition 11th March, 1927.
£900
By HYDROGRAPHIC OFFICE, New Edition 27th April, 1912.
£1,250
By HYDROGRAPHIC OFFICE, 30th Oct., 1925. Small corrections to 1932.
£1,250
By HYDROGRAPHIC OFFICE, 25th May, 1927. Small corrections to 1932.
“…one of the largest, beautifullest, most useful, and diverting Ornaments…”
Greenough’s riposte to Smith in the battle of the geological maps
Shanghai Sewers 

