Release: NBER Macrohistory Database
Series Is Presented Here As Two Variables-(1)--Original Data, 1863-1921 (2)--Original Data, 1921-1932. Source: Warren M. Persons, Forecasting Business Cycles, 1931, Pp. 170-171.
This NBER data series a01008a appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: a01008a
National Bureau of Economic Research, Index of Total Physical Production for United States [A0108AUSA322NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/A0108AUSA322NNBR, June 23, 2017.