UPDATE – thanks to all who have responded – but keep the suggestions coming!
See the replies and the images on the Press Photo History Project site: PPHP
This into the Press Photo History Project from a researcher:
‘Hi there, I am interested searching for people and places related to French Indochina between 1900-1954. Please let me know if this place can be a source of answer for my research.’
Answers to firstname.lastname@example.org