Series Is Presented Here As Three Variables--(1)--Seasonally Adjusted Data, 1921-1939 (2)--Original Data, 1939-1946 (3)--Seasonally Adjusted Data, 1946-1967. Data Refer To Gross National Product Excluding Total Inventory Change. Source: Bureau Of Census (Estimates By Harold Barger)
This NBER data series q08295a appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: q08295a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Total Final Sales Or Purchases for United States [Q0895AUSQ027SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q0895AUSQ027SNBR/, November 28, 2015.