Research and Analysis Section of Combat Intelligence, Office of the AC of S, G-2
This document gives demographics and information about Hong Kong and Canton. The focus is on geography, highways and other sources of transport, ports and facilities, counterintelligence, communications, and government among other topics.
The main residence, known as the "castle", was constructed from 1909 to 1921 using prison labor and concrete blocks made from a plant on site. This photograph shows concrete block making plant used to build the castle.