Source: Federal Reserve Bank Of St. Louis, Review Of June 1967, And Federal Budget Trends, August 14, 1968 And Subsequent Quarterly Issues.
This NBER data series q15018 appears on the NBER website in Chapter 15 at http://www.nber.org/databases/macrohistory/contents/chapter15.html.
NBER Indicator: q15018
Release: NBER Macrohistory Database
National Bureau of Economic Research, Federal Surplus Or Deficit, High Employment Budget for United States [Q15018USQ027SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q15018USQ027SNBR/, August 31, 2015.