This drawing can be dated as being after 1837 - Market House, and before 1845 (Albert Pier not yet having been begun). Coulson's Granary has appeared - it is not shown on the harbour plan of 1840, it does not show on the 1842 tithe map, although the site had been cleared ready for sale. Assuming a year for build, this drawing has to be 1844. A plan had begun to clear Penzance of disease and filth. A new age has begun, and that is reflected in the fact of a steam ship approaching on the horizon.
