The original is at the UK National Archive:
Reference: MFQ 1/962/7
Description:
Hong Kong. Plan of part of the cantonment at Victoria showing the position of cast iron water pipes and tanks with stop-cocks and fire plugs, and the sites of a proposed new tank and the first proposed masonry tank and pipes. The relative positions of the proposed additional stop-cocks and fire plugs are also shown. Reference table. Scale: 1 inch to 2 chains. Compass indicator. Signed by John J Wilson, Royal Engineers. Originally accompanying a report by Lieutenant S A St John, Royal Engineers, itself enclosed in a report on the water supply to the Murray Barracks.
Date: 1850
