Series Is Presented Here As Three Variables--(1)--Seasonally Adjusted, 1929-1942 (2)--Seasonally Adjusted, 1940-1946 (3)--Original Data, 1947-1966. Data Are Unemployment Expressed As A Percentage Of The Civilian Labor Force. Source: United States Bureau Of The Census, Current Population Reports: Labor Force Series P-50, Nos. 2, 13, And 19 (1940-1946, 1947-1948, And 1949 Annual Reports). Data Were Derived From NBER Series On Unemployment And Civilian Labor Force.
This NBER data series q08292b appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: q08292b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Unemployment Rate for United States [Q0892BUSQ156SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q0892BUSQ156SNBR/, June 2, 2015.