Source: G.H. Moore, Business Cycle Indicators, Vol. 2, NBER, P.162 (Dun And Bradstreet Data, For Description See Moore, P. 69)
This NBER data series q16089a appears on the NBER website in Chapter 16 at http://www.nber.org/databases/macrohistory/contents/chapter16.html.
NBER Indicator: q16089a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Diffusion Index, Profits, 1450 Manufacturers, Wholesalers and Retailers, Four Quarter Span for United States [Q1689AUSQ509NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q1689AUSQ509NNBR/, June 30, 2015.