Source: Federal Reserve Bulletin, Oct.1938; Pp.842-5; Oct.1939; Pp.880; Nov 1939; Pp.1007; Feb1941, Pp.166 And Ff Issues.
This NBER data series m08146a appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08146a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Index of Factory Employment, Total Durable Goods for United States [M0846AUSM331SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0846AUSM331SNBR/, August 3, 2015.