New Capital, "Government," And "Municipal" Are Excluded. Source: Commercial And Financial Chronicle; Checked With The Survey Of Current Business, Issues Of February And April, 1938 And The 1940 Suppplement (Adding "Domestic" And "Foreign").
This NBER data series m10017a appears on the NBER website in Chapter 10 at http://www.nber.org/databases/macrohistory/contents/chapter10.html.
NBER Indicator: m10017a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Total New Corporate Issues, For Refunding, U.S., Canadian and Foreign [M1017DM144NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M1017DM144NNBR/, November 26, 2015.