Source: J. Shiskin Of NBER, Table 5, January 29, 1965
This NBER data series m16006 appears on the NBER website in Chapter 16 at http://www.nber.org/databases/macrohistory/contents/chapter16.html.
NBER Indicator: m16006
Release: NBER Macrohistory Database
National Bureau of Economic Research, Adjusted Rates of Change of Composite Indexes of Twenty Leading Series for United States [M16006USM156SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M16006USM156SNBR/, August 4, 2015.