Source: For 1919-30, Bls, Bulletin 610. For 1913-34, Bls Mimeographed Report, Sept. 1938. For 1935-39, Bls, Mimeographed Report, May 1940. For 1940-42, Bls, Employment And Payrolls And Monthly Labor Review
This NBER data series m08096 appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08096
Release: NBER Macrohistory Database
National Bureau of Economic Research, Index of Factory Employment, Dyeing and Finishing for United States [M08096USM331NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M08096USM331NNBR/, November 29, 2015.