Release: NBER Macrohistory Database
Raw Data For 1930 Were Computed By Multiplying Adjusted Figures By The Federal Reserve Board Seasonal Index. The Derived Raw Data Were Then Seasonally Adjusted By The NBER Index. Source: Federal Reserve Board, Bulletin Of December 1927, Pp. 826-827, And Following Issues
This NBER data series m06018 appears on the NBER website in Chapter 6 at http://www.nber.org/databases/macrohistory/contents/chapter06.html.
NBER Indicator: m06018
National Bureau of Economic Research, Wholesale Trade Index, Drugs for United States [M06018USM331NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/M06018USM331NNBR, June 28, 2017.