Source: Report Of Commissioner, Metropolitan Police Office, Letter From Geoffrey Cawther Of London"Economist"
This NBER data series a02073 appears on the NBER website in Chapter 2 at http://www.nber.org/databases/macrohistory/contents/chapter02.html.
NBER Indicator: a02073
Release: NBER Macrohistory Database
National Bureau of Economic Research, Number of New Houses Built for London, Great Britain [A02073GB00LONA495NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/A02073GB00LONA495NNBR/, July 1, 2015.