This primary source comes from the Records of the Central Intelligence Agency.
Full Citation: Dissident Activities in Indochina and Elsewhere in Mainland Southeast Asia; 11/1950; Published Maps, 1947 - 2015; Records of the Central Intelligence Agency, Record Group 263; National Archives at College Park, College Park, MD. [Online Version, https://docsteach.org/documents/document/dissident-activities-in-indochina-and-elsewhere-in-mainland-southeast-asia, March 28, 2024]