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Geological map of Java and Madura, showing rock types and the locations of volcanoes. There are two cross sections (elevations) showing the heights of terrain: one of Java; and one from Cambodia to the Indian Ocean, including Borneo and Java.

Map of Java and Madura showing routes, especially for trading purposes, including railways, tramways, roads, ports for steamship services, harbours for different types of imports and exports. A list of train and tram routes is included.

Navigation map of the Celebes Sea, Makassar Strait and Java Sea, with bathymetry (sea depth), maritime routes, shoals and reefs, and landmark coastal mountains to aid navigation. On two sheets, which may not be from the same original map.

Map of the Dutch colonial administrative region of the island of Madoera (Madura), featuring bathymetry (sea depth), and an inset map of the Kangean Islands. (From ‘Algemeene Atlas van Nederlandsche Indie [General Atlas of the Dutch East Indies]’.)

This map of Java and Madura uses hachures: short lines/dashes that give a sense of the shape and steepness of terrain. Roads, railways and rivers are marked, as are anchor points and coral reefs (marked with letter ‘K.’ before their name).

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.

Colourful hand-drawn portolan (nautical) navigation chart, featuring bathymetry (sea depth), shoals and reefs, and anchor points. The coasts have pictorial representations of landmarks (trees, houses, mountains). Orientated with south at the top.

Hand-drawn portolan (nautical) chart, featuring a rhumbline network (the web of interconnected lines), bathymetry (sea depth), shoals and reefs, elevations (side views of landmark mountains), and names of coastal settlements, all to aid navigation.