Data Are At Annual Rate. Source: 1947-1955 Data Are From Survey Of Current Business, June 1956; September, December, March, And June Issues Thereafter.
This NBER data series q10095 appears on the NBER website in Chapter 10 at http://www.nber.org/databases/macrohistory/contents/chapter10.html.
NBER Indicator: q10095
Release: NBER Macrohistory Database
National Bureau of Economic Research, Business Expenditures On New Plant and Equipment, Total for United States [Q10095USQ027NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q10095USQ027NNBR/, September 3, 2015.