Series Is Presented Here As Three Variables--(1)--Seasonally Adjusted Data, 1921-1939 (2)--Original Data, 1939-1945 (3)--Seasonally Adjusted Data, 1946-1968. Source: 1946-1968 Data Are From National Income And Products Account Of The United States, 1929-1965; Data Through 1963 Are Also Found In A Supplement To The Survey Of Current Business Of August, 1966; Subsequent Data Are From Monthly Issues Of The Survey Of Curent Business.
This NBER data series q08282c appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: q08282c
Release: NBER Macrohistory Database
National Bureau of Economic Research, Disposable Personal Income for United States [Q0882CUSQ027SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q0882CUSQ027SNBR/, June 30, 2015.