Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Billions of Ton-Miles, Not Seasonally Adjusted

Frequency:  Annual

Data Were Computed By Adding Ton-Miles For The Six Railroads And The Ton-Miles For The Seven Railroad.. Data For 1887-1890 Were Computed By Adding The Ton-Miles Of The Thirteen Individual Railroads. Source: Poor'S Manual Of Railroads, 1888, Pp. Xxvii-Xxix; 1889, P. Viii; And Volumes For 1890 And 1891

This NBER data series a03003g appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: a03003g