Series Is Presented Here As Two Variables--(1)--Original Data, 1940-1968 (2)--Original Data, 1947-1969. In 1947 Figures, Fourteen And Fifteen Year Olds Are Excluded From The Series. Source: Bureau Of Labor Statistics, For 1947 Data: Bureau Of The Census, Current Population Reports, Labor Force, Series P-50, No. 13; For 1948-1969: Employment And Earnings And Monthly Report On The Labor Force, Vol. 13, No. 9, March 1967 (Original Data); Vol. 12, No. 8, February 1967 (Adjusted Data), And Subsequent Monthly Issues.
This NBER data series m08325b appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08325b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Total Civilian Labor Force (16 Years and Older) for United States [M0825BUSM148NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0825BUSM148NNBR/, July 4, 2015.