Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Car-Miles, Not Seasonally Adjusted

Frequency:  Monthly

Data Exclude Switching And Terminal Companies. Data For 1920-1934 Include Light Trains; Data For 1935-1942 Exclude Light Trains. Source: Interstate Commerce Commission, Data For 1920-1934: Computed By NBER From Series (Freight Car-Miles) And (Freight Train-Miles). Data Fir 1935-1942: "Freight Train Performance Of Class I Steam Railways In The United States".

This NBER data series m03058 appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: m03058