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A late 19th century map of the Minahasa Peninsula, northern Celebes (Sulawesi), marked with the locations of mines (‘mÿnen’). The red borders indicate areas for ‘mijnbouwkundig onderzoek [mining research]’.

Shipping routes are the focus of this map of the Dutch East Indies, indicated by red lines labelled with the name of the shipping company and the destinations. Parcel shipping routes are also shown. Inset maps feature railway lines too.