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The seas of the Dutch East Indies are the focus of this map, with maritime routes, sea temperature, sea depth, currents and monsoons shown. There are graphs of population by ethnicity, agriculture and livestock, trade and shipping, and trade exports.

This map of Sumatra is divided into administrative areas called ‘residencies’, which include the surrounding islands such as the Riau Archipelago and islands in the South China Sea.

Hand-drawn map of the southern part of Lake Toba in Sumatra, with roads, rivers and paths marked. Mountains, forest and rice fields are also shown, as are missionary buildings for indigenous and European people.

A large-scale map of northern Sumatra, spread over 16 sheets, and divided into administrative regions. The island of Nijas (Nias) is marked with the locations of local tribes, and there is a list of other maps referenced in producing the map.

A large-scale map of northern Sumatra, spread over 16 sheets, and divided into administrative regions. The island of Nijas (Nias) is marked with the locations of local tribes, and there is a list of other maps referenced in producing the map.