Series Is Presented Here As Two Variables--(1)--Original Data, 1920-1942 (2)--Original Data, 1932-1956. This Segment Is Only Roughly Comparable To The Previous One In Industry Coverage. Source: Bureau Of Labor Statistics: For 1932-1952, "Employment, Hours, And Earnings, " Manufacturing Division, Paper And Allied Products Group: Pulp, Paper, And Paperboard Mills, Releases Ls53-1907, February 1953 And May 1955; For 1953-1956, Release Of June 1956 And Monthly Labor Review And "Employment And Earnings."
This NBER data series m08234b appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08234b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Average Actual Hours of Work Per Week, Paper and Pulp Manufacturing for United States [M0834BUSM065NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0834BUSM065NNBR/, August 2, 2015.