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This 19th century map highlights British colonial possessions in India (in red), and the various kingdoms of northern Southeast Asia, including the Birman Empire (Myanmar), Cochin China and Tonkin (Vietnam), Lao (Laos), Siam (Thailand), and Cambodia.

This map of the Straits of Malacca features shoals and reefs, bathymetry (sea depth), drawings of side views of landmark mountains (elevations) and written observations, all designed to aid navigation. Pencil marks indicate the map was actually used.

This map of the Straits of Malacca features shoals and reefs, bathymetry (sea depth), drawings of side views of landmark mountains (elevations) and written observations, all designed to aid navigation.

Plan of improvements to the pier at the port in Batavia (Jakarta): new parts added in 1822 are labelled AB; numbers record the change in water depth (red is before the improvements; black is after). Planned future works (labelled BC) are also shown.

Plan of improvements made to the pier at the port in Batavia (Jakarta), including profile drawings of the construction parts. Lines indicate the changing position of the beach and the sandbank over the years, and numbers show the water depth.

Plan of improvements made to the pier at the port in Batavia (Jakarta): red lines show new parts added in 1822; numbers record the change in water depth (red is 1818; black is 1823). Planned future works and the ‘Waterkasteel’ fort are also shown.

This simple map of the Dutch East Indies shows the locations of Christian missions in the region in the early 19th century.

This simple map of the Dutch East Indies shows the locations of Christian missions in the region in the early 19th century.