This Series Is Concluded With The February, 1938 Issue Of Dun'S Review; November, 1937 Is The Last Available Datum (See January, 1938 Issue, P.33). Quarterly Figures Are First Of Quarter Data. Source: Bradstreet'S, January 15, 1910 (P.42); January, 15, 1916 (P.40); May, 5, 1923, (P.297); June 4, 1927 (P.377) And Succeeding Series. Dun And Bradstreet'S Monthly Review For April, 1933-December, 1936; Dun'S Review For 1937.
This NBER data series q04049 appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html.
NBER Indicator: q04049
Release: NBER Macrohistory Database
National Bureau of Economic Research, Index of Wholesale Prices for United States [Q04049USQ052NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q04049USQ052NNBR/, July 3, 2015.