Release: NBER Macrohistory Database
Series Is Presented Here As Four Variables--(1)-- Original Data, 1906-1930 (2)--Original Data, 1923-1948 (3)-- Original Data, 1947-1954 (4)--Original Data, 1954-1956. New Series Begins In May, 1954. No Earlier Figure Given, See Preceeding Entry. Source: Bls, Prices And Price Relatives For Individual Commodities In The Revised Index: 1947-50, Group 5 (Feb. 1952); Same For January- November, 1951; Monthly Releases Thereafter.
This NBER data series m04190d appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html.
NBER Indicator: m04190d
National Bureau of Economic Research, Wholesale Price of Bituminous Coal, Mines for United States [M0490DUSM349NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/M0490DUSM349NNBR, October 26, 2016.