Series Is Presented Here As Two Variables--(1)--Original Data, 1871-1938 (2)--Original Data, 1926-1969. The Index For 1926-February 1957 Is Based On Daily Quotations For Ninety Stocks; The Index For March 1957-1969 Is Based On Daily Quotations For Five Hundred Stocks. Source: Standard And Poor'S, Data For 1926-1963: Trade And Security Statistics: Security Price Index Record, 1964 Edition. Data For 1964-1969: Current Statistics, Monthly Issues.
This NBER data series m13046b appears on the NBER website in Chapter 13 at http://www.nber.org/databases/macrohistory/contents/chapter13.html.
NBER Indicator: m13046b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Dividend Yield of Common Stocks On The New York Stock Exchange, Composite Index for United States [M1346BUSM156NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M1346BUSM156NNBR/, July 6, 2015.