Series Is Presented Here As Two Variables--(1)--Original Data, 1897-1926 (2)--Original Data, 1927-1941. The Segments Of This Series Are Essentially The Same, Except For The Number Of Decimal Places Used. Source: Mineral Resources, 1925, Part Ii P. 543; 1928, Part Ii, P.719; 1931, Part Ii, P.379, Minerals Yearbook, 1937-1940; Survey Of Current Business Thereafter. Data Are Also Found In U.S Bureau Of Mines, Coke And Byproduct Tables 1932; Usbm, Preliminary Statistics Of Coke Production In 1933.
This NBER data series m01120b appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: m01120b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Coke, Beehive Production for United States [M0120BUSM446NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0120BUSM446NNBR/, August 29, 2015.