Series Is Presented Here As Two Variables--(1)--Original Data, 1897-1916 (2)--Original Data, 1914-1958 A Detailed Description Of Methods Of Constucting Averages Is Given In "Basis Of Calculation Of Dow-Jones Average" Available From The Wall Street Journal. For A More Detailed Description Of The Series, See Business Cycle Indicators, Vol. Ii, Moore, NBER. This Index Is Based On Daily Closing Prices On The New York Stock Exchange. Averages Of Highest And Lowest Indexes For The Month Are Used. Source: Data Were Compiled By Dow Jones And Company From Quotations In The Wall Street Journal. Data Are From The Dow-Jones Averages, 13Th Edition, 1948, And Supplementary Averages (Barron'S Publishing Company).
This NBER data series m11009a appears on the NBER website in Chapter 11 at http://www.nber.org/databases/macrohistory/contents/chapter11.html.
NBER Indicator: m11009a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Dow-Jones Industrial Stock Price Index for United States [M1109AUSM293NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M1109AUSM293NNBR/, September 1, 2015.