Series Is Presented Here As Two Variables--(1)--Original Data, 1929-1945 (2)--Original Data, 1945-1955 Data Include Some Production From Secondary Material Passing Through Primary Smelteries. Source: U.S. Department Of Commerce, Survey Of Current Business, Supplements For 1932, 1936, 1938, 1940, And Following Monthly Issues.
This NBER data series m01245a appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: m01245a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Refined Lead Production From Domestic Ore for United States [M0145AUSM601NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0145AUSM601NNBR/, August 31, 2015.