University of Bristol - Historical Photographs of China reference number: NA16-059. Image from an album in The National Archives referenced as ‘HONG KONG 3. Views of Hong Kong from the 1860s to the 1920s' (CO 1069-446). This photograph was most probably taken at the pumping station in Yau Ma Tei (油麻地). See NA16-057 and NA16-058.
Boiler Room, Kowloon Reservoir, Hong Kong
Black and white photograph
The National Archives, London