Weekly Averages Were Computed From Data Given For Weeks Ending On A Friday. Data For Weeks Ending On The First, Second, Or Third Of The Month Considered As Part Of The Previous Month. The Sum Of Data For The Month Was Divided By Four Of Five, Depending On The Number Of Weeks Given For The Month. Data For August 1911 Reflect Labor Disputes And A Railroad Strike. Data For September 1939 Cover Only One Week. Source: Commercial And Financial Chronicle, March 20, 1875, And Following Weekly Issues; London Economist.
This NBER data series m01205 appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: m01205
Release: NBER Macrohistory Database
National Bureau of Economic Research, Cotton Forwarded From Liverpool for Great Britain [M01205GBM534NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M01205GBM534NNBR/, September 1, 2015.