1869
Papua New Guinea, Indonesia
From August Petermann's ‘Geographische Mittheilungen’, this map of New Guinea and neighbouring islands is marked with a maritime route from the western tip of New Guinea that is labelled ‘from Batavia to Hong Kong in 35 days’ and dated 1846.
1849
Brunei, Cambodia, East Timor, Indonesia, Laos, Malaysia, Myanmar, Papua New Guinea, Philippines, Singapore, Southeast Asia, Thailand, Vietnam
Chart of the Indian Ocean, showing climate and weather-related data, including around the seas and straits of Southeast Asia where trade routes are marked, along with monsoon and typhoon regions, and currents during the different monsoon seasons.
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