Series Is Presented Here As Two Variables--(1)--Original Data, 1939-1946 (2)--Original Data, " 1946-1967. Unadjusted Figures Were Multiplied By Four To Derive Totals At Annual Rates. Source: U.S. Department Of Commerce, Data For 1946-1963: "National Income And Product Accounts Of The U.S., 1929-1965, " A Supplement To The Survey Of Current Business, August 1966; Data For 1964-1967: Scb, Monthly Issues
This NBER data series q10026b appears on the NBER website in Chapter 10 at http://www.nber.org/databases/macrohistory/contents/chapter10.html.
NBER Indicator: q10026b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Gross Private Domestic Investment, Total for United States [Q1026BUSQ027NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q1026BUSQ027NNBR/, August 28, 2015.