Series Is Presented Here As Two Variables--(1)--Original Data, 1870-1911 (2)--Original Data, 1908-1916. Data For 1871 On Include Alsace-Lorraine. Source: Statistisches Jahrbuch Fur Das Deutsche Reich, 1880, P. 30 And Later Annual Issues.
This NBER data series a01217a appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: a01217a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Coal Production for Germany [A0117ADEA422NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/A0117ADEA422NNBR, February 11, 2016.