![](https://historicalmaps.yale-nus.edu.sg/rails/active_storage/representations/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBcE1EIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--be7e24b51e6edd5bac29c63eb7080884b1ab4440/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaDdCam9MY21WemFYcGxTU0lNTkRBd2VETXdNQVk2QmtWVSIsImV4cCI6bnVsbCwicHVyIjoidmFyaWF0aW9uIn19--bc467f5637e8b6d3bfb826116f92b6bfedfbf03a/beinecke-15514643.jpeg)
Map of Siam and some of its tributary provinces
1870
Cambodia, Laos, Myanmar, Thailand
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.