Release: NBER Macrohistory Database
Series Is Presented Here As Four Variables--(1)--Seasonally Adjusted Data, 1919-1942 (2)--Original Data, 1939-1949 (3)--Original Data, 1947-1951 (4)--Original Data, 1951-1956. This Segment Ends In 1942 And Is Followed By A 1939-Based Index, Which Is Believed To Be Roughly Comparable. Source: Federal Reserve Board, Bulletins, For 1919-1933 Data: October 1938; For 1934-1942 Data: October 1939 And Monthly Issues Thereafter.
This NBER data series m08015a appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08015a
National Bureau of Economic Research, Index of Factory Employment, Iron and Steel Products for United States [M08F5AUSM331SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/M08F5AUSM331SNBR, July 30, 2016.