Data Have Been Adjusted For Trading-Day And Calendar-Month Variation. Revisions For 1961-1970 May Be Found In Census Bureau Series M3-1.2. Source: U.S. Bureau Of The Census, "Manufacturers' Shipments, Inventories, And Orders: 1947-1963", Revised, Series M3-1, October 1963;"Business Statistics, 1965", Biennial Supplement To Survey Of Current Business; Last Month Is From Current Statistical Reports, Series M3-1 (Same Title As Above), Monthly
This NBER data series m06121 appears on the NBER website in Chapter 6 at http://www.nber.org/databases/macrohistory/contents/chapter06.html.
NBER Indicator: m06121
Release: NBER Macrohistory Database
National Bureau of Economic Research, Manufacturers' Shipments, Blast Furnaces, Steel Mills for United States [M06121USM144NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M06121USM144NNBR/, October 4, 2015.