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Map of the Dutch colonial administrative region (residency) of Riouw (Riau) focusing on the islands and sea passages, with bathymetry (sea depth) marked. (From ‘Algemeene Atlas van Nederlandsche Indie [General Atlas of the Dutch East Indies]’.)

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’.

Map of the Indian Ocean showing the currents (represented by arrows), including during the North East and North West monsoons. Numbers on the arrows indicate the current’s speed.

Map of the Indian Ocean showing maritime routes, including some to and around Southeast Asia, where they pass through the Strait of Malacca, the Sunda Strait, and the straits between the Lesser Sunda Islands.

On the main map, the volcanic regions of Southeast Asia are labelled, active and extinct volcanos are marked, and the 1815 eruption of Tumbora (Mount Tambora on Sumbawa) is highlighted. Even more details are shown on an inset map of Southeast Asia.

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.

Map of the rivers and river basins of Europe and Asia. In Southeast Asia, the Irawady and Menam Kong basins are shown, with their area in square miles (and their area as a multiple of the size of the Pregel River basin).

Mountain chains are represented by black lines; volcanoes by black dots. Three insets maps: expansion of Reguain—island of Taung-ywa, off the coast of Myanmar—due to volcanic activity; geology of Java (with heights of mountains); volcanoes of Luzon.

On the main map, the volcanic regions of Southeast Asia are labelled, active and extinct volcanos are marked, and the 1815 eruption of Tumbora (Mount Tambora on Sumbawa) is highlighted. Even more details are shown on an inset map of Southeast Asia.

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.

There is an inset map of the island of Singapore on this map of India. The island is coloured red to indicate it is British colonial territory. The surrounding islands and straits are marked, as well as details of the city such as the Sultan Mosque.

On this map of Southeast Asia, British colonial territory is highlighted within red borders: the Straits Settlements (Singapore, Malacca and Penang) on the west coast of the Malay Peninsula; and British Burma (Chittagong and Aracan, and Tenasserim).