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The United States Treasury Department produced this map of trade routes crossing the Pacific Ocean between the United States and Asia. Each route is labelled with the names of its ports, and with the distance between them in miles.

The border of the Kingdom of Siam (Thailand) and its internal administrative districts are highlighted in yellow. Inset maps show the cities of Bangkok, Chiengmai (Chiang Mai) and Luang Pra Bang (Luang Prabang) in more detail.

This map highlights the colonisation of Southeast Asia, showing French Indochina (green), British Burma and Malaya (orange), the Dutch East Indies (pink), and the Spanish Philippines (green). In the region, only Siam (yellow) is independent.

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.

A map of Siam (Thailand) and parts of Burma (Myanmar), Cambodia and Laos, focusing on the river networks, and the mountain ranges which are represented by hachures: short lines/dashes that give a sense of the shape and steepness of terrain.

On this hand-drawn and coloured map of Asia, the colours differentiate the colonial territories of the European powers: for example, New Guinea is divided into Dutch, British and German areas, and Borneo is split between the British and Dutch.

The route between Saigon and Rangoon taken by the German ethnologist Adolf Bastian is marked on this map of mainland Southeast Asia. There are two inset maps of cites: Mandalay, Amarapura and Ava in Burma; and Bangkok in Siam (including 14 temples).

A sketch of the river networks discharging into the Gulf of Siam (Gulf of Thailand), derived from the observations of mid-19th century American missionaries. Settlements along the rivers are noted, as are areas where sugarcane was grown.

Map of the Meinam (Chao Phraya) river from the city of Judia (Ayutthaya) to its mouth near Bangkok. Features temples, villages, a Bishop's Palace, a fort at Bangkok, and a ‘Champ des Eléphans [Elephant Field]’. The text is in French and Dutch.

Map of the Meinam (Chao Phraya) river from the city of Judia (Ayutthaya) to its mouth near Bangkok. Features temples, villages, a Bishop's Palace, a fort at Bangkok, and a ‘Champ des Eléphans [Elephant Field]’. The text is in French and Dutch.

Map of the Meinam (Chao Phraya) river from the city of Juthia (Ayutthaya) to its mouth near Bangkok. Features temples, villages, a Bishop's Palace, a fort at Bangkok, and an ‘Olifanten Veldt [Elephant Field]’.

Map of the Meinam (Chao Phraya) river from the city of Juthia (Ayutthaya) to its mouth near Bangkok. Features temples, villages, a Bishop's Palace, a fort at Bangkok, and an ‘Olifanten Veldt [Elephant Field]’.