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A map of a route taken by the Dutch Christian missionary Johannes Albert Traugott Schwarz. Over four days, accompanied by Anton de Lange, he walked from Popo (Poopo) south through the Minahasa Peninsula. The map also shows an earlier aborted route.

This late 19th century map of Southeast Asia shows the best maritime routes around the region, according to the time of year. There are also inset maps highlighting the rivers and southern islands of Singapore, and the sea depth around Labuan Island.