Source: Securities And Exchange Commission, Statistical Bulletin, May 1951 And Subsequent Issues
This NBER data series q10108 appears on the NBER website in Chapter 10 at http://www.nber.org/databases/macrohistory/contents/chapter10.html.
NBER Indicator: q10108
Release: NBER Macrohistory Database
National Bureau of Economic Research, New Securities Offered For Cash By Manufacturing Corporations, Estimated Gross Proceeds, Preferred Stocks for United States [Q10108USQ144NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q10108USQ144NNBR/, August 5, 2015.