Series Is Presented Here As Three Variables-- (1)--Original Data, 1850-1894 (2)--Original Data, 1890-1914 (3)-- Original Data, 1913-1968. Source: Bls Mimeographed Release "All Commodities, Wholesale, Price Index (1957-59=100)" For 1913-November, 1960; Bls Mimeographed Releases Thereafter; Also Survey Of Current Business.
This NBER data series m04048c appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html.
NBER Indicator: m04048c
Release: NBER Macrohistory Database
National Bureau of Economic Research, Index of Wholesale Prices for United States [M0448CUSM350NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0448CUSM350NNBR/, June 30, 2015.