Release: NBER Macrohistory Database
Data For 1908-1935 Exclude Switching And Terminal Companies. Data For 1888-1916 Represent Fiscal Year Figures With Year Ending June 30 Of Year Named; Data For 1917-1935 Represent Calendar Years. The Figure For 1913 Includes Class I And Ii Railroads Only. Source: Interstate Commerce Commission, Data For 1888-1889: "Statistics Of Railways", 1893, P. 63; Data For 1890-1935: "Statistics Of Railways, 1926 Pp. Ci, Cii; 1935, P. 5-113 (Statement #53, For Both Years).
This NBER data series a03003b appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.
NBER Indicator: a03003b
National Bureau of Economic Research, Revenue Per Freight Ton-Mile, All Railroads for United States [A0303BUSA259NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/A0303BUSA259NNBR, November 22, 2017.