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Map of a proposed extension of a telegraph system from Rangoon (Yangon, Myanmar) to China. Includes current and projected railways, steam ship routes, and population figures for western China. From the British magazine ‘The Illustrated London News’.

Chart of the Indian Ocean, showing climate and weather-related data, including around the seas and straits of Southeast Asia where trade routes are marked, along with monsoon and typhoon regions, and currents during the different monsoon seasons.

Southeast Asia is shown on sheets two and three of this 12-sheet map of the Indian and Pacific oceans, including detailed inset maps of the straits of Singapore, Bangka, Gaspar and Sunda, with bathymetry (sea depth), shoals, reefs, anchorages etc.

Map charting the three expeditions of the British Royal Navy captain James Cook, including HMS Endeavour’s journey via Batavia (Jakarta) in 1770, and HMS Resolution’s journey through the South China Sea (after Cook’s death) in 1779.

Maritime routes had to be adjusted in response to the changing monsoon seasons, as is seen on this late 18th century map of the Indian Ocean. Drawings of the heads of children blowing—called ‘wind-heads’—are used to indicate wind direction.

Map of the Indian Ocean dominated by a rhumbline network—a web of interconnected lines used to help plot routes—with a compass rose at the centre. At the top there are (incomplete) drawings of people with text in Dutch, French, English and Spanish.