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Map of the east coast of the Aru Islands (Maluku Islands), with bathymetry (sea depth), tides and currents, shoals and other obstructions. An inset map shows the anchorage at islands off the coast, along with elevation views of the islands.

Eleven separate maps of bays and river mouths of Sumatra, including two bays on the island on Bras (Breueh Island), and the bay at Kota Radja (Banda Aceh). Bathymetry (sea depth), anchor points, reefs and shoals are marked, along with tide data.

Four navigation maps of the waterways and anchorages around the east coast of the Aru Islands (in the Maluku Islands, near New Guinea). Bathymetry (sea depth), shoals and other obstructions are shown, with trees and villages to use as landmarks.

Eight navigation maps from around the south coast of Celebes (Sulawesi). Anchorages, roadsteads (bodies of water sheltered from tides/currents), bathymetry (sea depth), shoals and other obstructions are shown, with hills and settlements as landmarks.

Navigation map of the Riau Roadstead (off west coast of Bintan, Riau Archipelago): a body of water sheltered from tides/currents, for ships to anchor. Bathymetry (sea depth) and various obstructions and landmarks (hills, buildings, trees) are shown.

A map to aid navigation in Ambon Bay, on the island of Ambon in the Maluku Islands: bathymetry (sea depth) and mountains are shown along the coasts, with inset maps of a coal mine pier and Fort Victoria. A second map updates the coal mine pier map.

Two maps of Lombok (Lesser Sunda Islands) from the time of the Dutch intervention which led to the colonisation of the island. Both maps focus on roads: the first covers the whole island; the second focuses on the capital city of Mataram.

Map of the Kai Islands, in the Banda Sea, designed for navigation: it features bathymetry (sea depth), tide data (arrows), reefs and shoals. Obstructions in the water are marked ‘kr’ (coral), ‘m’ (mud), ‘s’ (shells), ‘st’ (stones), and ‘z’ (sand).

This map is colour-coded to show the dozens of different languages and dialects spoken on Celebes (Sulawesi) and the surrounding islands in the late 19th century.

A map of railway lines between Fort de Kock (Bukittinggi) and Pajakombo (Payakumbuh) in western Sumatra. The map includes existing line, planned line and rack railway line (a line with a rack and pinion system so it can operate on steep slopes).

The residency of Preanger (Parahyangan), West Java, with plantations (coconut, coffee, tea, cinchona (‘kina’), betel, teakwood, bamboo) and crops (rice, sugarcane, alang-alang). Two inset maps: a triangulation map, and a map of land route distances.

Two maps about irrigation systems on Java. The first shows areas where systems are in place or being created, with their size. The second map shows Java divided into irrigation departments (both on trial and in operation).