Source: Federal Reserve Board, Bulletin Of December 1927, P. 826-827, And Following Issues
This NBER data series m06017 appears on the NBER website in Chapter 6 at http://www.nber.org/databases/macrohistory/contents/chapter06.html.
NBER Indicator: m06017
Release: NBER Macrohistory Database
National Bureau of Economic Research, Wholesale Trade Index, Boots and Shoes for United States [M06017USM331NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M06017USM331NNBR/, July 4, 2015.