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Map of the Indian Ocean showing the currents (represented by arrows), including during the North East and North West monsoons. Numbers on the arrows indicate the current’s speed.

Map of the Indian Ocean showing maritime routes, including some to and around Southeast Asia, where they pass through the Strait of Malacca, the Sunda Strait, and the straits between the Lesser Sunda Islands.

A series of four maps of the Indian Ocean—one for each quarter of the calendar year—showing the direction and intensity of the winds, including around the seas of Southeast Asia. There are extensive explanatory notes.

A late 19th century map depicting a route from Hanoi to That-Khe via Lang-Son (in northern Vietnam, near the border with China at Kouang-Si (Guangxi)). Two inset maps feature plans of military forts, villages, rivers and fields along the route.

The routes taken by the French civil servant and explorer Auguste Pavie are marked on this map of Siam (Thailand) and Cambodge (Cambodia), along with the telegraph line that he subsequently constructed from Pnom Penh (Phnom Penh) to Bangkok.

Spread over four sheets, this topographical map was based on the explorations of the French civil servant Auguste Pavie. Lasting 16 years (1879–1895), his ‘Missions Pavie’ explored all of mainland Southeast Asia.