Series Is Presented Here As Two Variables--(1)--Original Data, 1920-1948 (2)--Original Data, 1932-1969. Beginning With 1959, Alaska And Hawaii Are Included. Source: Bureau Of Labor Statistics, Bulletins No. 1312, 1312-1 And Subsequent Bulletins
This NBER data series m08029b appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08029b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Average Hours of Work Per Week, Production Workers, Manufacturing, Total for United States [M0829BUSM065NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0829BUSM065NNBR/, July 29, 2015.