Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Train-Miles, Not Seasonally Adjusted

Frequency:  Monthly

Data Exclude Switching And Terminal Companies Throughout. Source: Interstate Commerce Commission, Data For 1920-1934: "Freight And Passenger Service Operating Statistics Of Class I Steam Railways In The United States". Data For 1935-1943: "Freight Train Performance Of Class I Steam Railways In The United States".

This NBER data series m03050 appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: m03050