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An early 19th century map of Singapore’s southern coast and islands, with bathymetry (sea depth), shoals and reefs, anchor points, and notes to aid navigation. The roads and main buildings of Singapore city are also shown.

Brief notes printed on this 19th century map of Southeast Asia provide details about each region, including: numbers and ethnicity of the population, local or colonial rulers, crops and products, geography (corals, forests, volcanos, earthquakes).

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.