Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Net Ton-Miles per Pound of Fuel, Not Seasonally Adjusted

Frequency:  Monthly

Notes:

During Processing It Was Discovered That Monthly And Quarterly Figures For 1931 As Provided By NBER Do Not Agree, But Data Have Not Been Changed. The Annual Figure Provided Here Was Computed From Monthly Data. Source: Computed By NBER By Dividing Series (Net Ton-Miles) By Series (Aggregate Coal Consumption By Freight Steam Locomotive).

This NBER data series m03083 appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: m03083