![](https://historicalmaps.yale-nus.edu.sg/rails/active_storage/representations/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBFQT09IiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--a7553da55adbd9be9a2a2d42189d71468425035b/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaDdCam9MY21WemFYcGxTU0lNTkRBd2VETXdNQVk2QmtWVSIsImV4cCI6bnVsbCwicHVyIjoidmFyaWF0aW9uIn19--8e68de2000a6e968bae6c9034cc043e081a6a0fb/beinecke-15514644.jpeg)
A sketch of the rivers of Siam from the observations of the American missionaries
c.1860-1869
Thailand
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.