This Index Is Based On Industry Components Listed In "Plant And Equipment Expenditures Of Business," Office Of Business Economics Business News Report. Coverage For 1947-February 1951 Is Twenty-Two Companies; For March 1951-February 1954 Is Nineteen Companies; For 1954-1958 Is Twenty Companies. Source: G.H. Moore, Business Cycle Indicators, Vol. 2, NBER, P. 170
This NBER data series q16105 appears on the NBER website in Chapter 16 at http://www.nber.org/databases/macrohistory/contents/chapter16.html.
NBER Indicator: q16105
Release: NBER Macrohistory Database
National Bureau of Economic Research, Diffusion Index, Plant and Equipment Expenditures, Actual and Expected, 19-22 Industries, Four Quarter Span for United States [Q16105USQ509NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q16105USQ509NNBR/, October 9, 2015.