books.google.com - This book tells the story of French interaction with Vietnam and the neighboring region, which began with the French seizure of Cochin-China and Tonking in the 19th century under Emperor Tu Duc and ended with their humiliating defeat at Dien Bien Phu in 1954. After the conclusion of treaties with China...https://books.google.com/books/about/The_Last_Emperors_of_Vietnam.html?id=9RorGHF0fGIC&utm_source=gb-gplus-shareThe Last Emperors of Vietnam