Figures From Source Have Been Derived From The Published Price -Earnings Ratio, Being The Reciprocals, Based On Daily Stock Price Indexes. Source: Standard And Poor'S Trade And Securities Statistics: Security Price Index Record, 1964 Edition, Pp. 122-124; Current Statistics, Monthly Issues.
This NBER data series q13051 appears on the NBER website in Chapter 13 at http://www.nber.org/databases/macrohistory/contents/chapter13.html.
NBER Indicator: q13051
Release: NBER Macrohistory Database
National Bureau of Economic Research, Earnings Yield of Common Stocks On The New York Stock Exchange, Composite for United States [Q13051USQ156NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q13051USQ156NNBR/, July 4, 2015.