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Four-sheet topographic map of the residency of Probolinggo (East Java), with an inset map of distances between locations by rail and road, and a signal map. Crops, fishing ponds, sugar factories, and coffee and salt warehouses are shown.

A map of the watershed of the Bila and Pane rivers in northern Sumatra. In addition to many rivers/tributaries, mountains, roads, paths and administrative borders are marked. Side views of mountains (elevations) are shown to use a landmarks.

This map of Java and Madura is divided into administrative areas: residencies (blue lines), departments (green) and districts (yellow). The locations of government coffee and salt warehouses, as well as railways and tramways (red lines) are marked.

Three maps of the Caroline Islands. One shows colonised areas in Southeast Asia: Dutch East Indies; British North Borneo, British New Guinea; German New Guinea; Philippines (Spain); Portuguese Timor. The route of the Challenger expedition is marked.

Four-sheet topographic map of the residency of Probolinggo (East Java), with an inset map of distances between locations by rail and road, and a signal map. Crops, fishing ponds, sugar factories, and coffee and salt warehouses are shown.