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Navigation map of the northwest coast of Sumatra. Bathymetry (sea depth), anchor points, shoals and other obstructions (clay, coral, mud, stones, sand) are marked, with hills and settlements to use as landmarks.

Map of an expedition route—in red—through the country of the Batak people of northern Sumatra, from Lake Toba to Loemban-Pinasa (Lumban Pinasa) and Djandji. Mountains and forests are shown, along with two drawings of views of hills.

Multiple maps from the Aceh War, spread over 12 sheets. Includes maps of fortifications, trenches, battle formations; building plans, including the Aceh Sultan’s palace; topographic maps; and drawings of a ‘kotta mara’ (fortified raft).

Map of the island of Nias off the west coast of Sumatra. Nias and Muslim villages are marked separately; large interior areas are left blank (‘Niet onderzocht [Not researched]’). Anchor points and side views of hills (elevations) are for navigation.

This detailed map of the Dutch East Indies in the mid-19th century is spread over eight sheets, plus a cover sheet showing the whole area. There are numerous inset maps of islands, bays, cities etc.

This map of the Dutch East Indies is spread over eight sheets, with a hand-drawn cover sheet showing the whole area. There are numerous inset maps of islands, bays, cities etc. Two of the inset maps have a replacement map pasted over them.