Series Is Presented Here As Two Variables--(1)--Original Data, 1899-1939 (2)--Original Data, 1932-1965. Data Were Computed By Dividing By The Number Of Days Per Month. Source: American Steel And Iron Institute, Annual Statistical Report, 1944 And Following Years. Latest Data Are From The Aisi Monthly Form 102, "Production Of Open Hearth, Bessemer, And Electric Steel Ingots And Steel For Castings".
This NBER data series m01135b appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: m01135b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Steel Ingot Production for United States [M0135BUSM585NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0135BUSM585NNBR/, August 3, 2015.