Source: For 1923-38: Bls Production Worker Employment Payrolls, Hours And Earnings In All Manufacturing Industries, Durable And Nondurable Goods Divisions, 1909-1938 (Ls 49-1297,9/48); 1939-40: Supplement For 1947;1945-7/49: Scb Supplement 1949 Monthly Issues Through September 1949.
This NBER data series m08146b appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08146b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Index of Factory Employment, Total Durable Goods for United States [M0846BUSM331SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0846BUSM331SNBR/, November 24, 2015.