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A late 19th century map of the Dutch East Indies on four sheets, detailing maritime routes around the region. There are also inset maps showing railways, rivers, roads, and telegraph systems, as well as individual islands and cities.

This detailed map of the Dutch East Indies in the mid-19th century contains a great deal of information: topographical details, settlements and administrative areas, roads, railways and maritime routes, telegraph lines, inset maps etc.

Early navigation map of the South China Sea. The web of lines is a rhumbline network, while the numbers indicate sea depth (bathymetry), both used to aid navigation. A route around the Gulf of Thailand is marked with text and the dates 1643 and 1644.