Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Percent, Not Seasonally Adjusted

Frequency:  Monthly

Data Exclude Switching And Terminal Companies. The Figure For January 1920 Was Computed By NBER By Dividing Loaded Cars By Loaded And Empty. Data For July-September Of 1922 Were Affected By A Shopmens' Strike. 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 1935-1942: "Freight Train Performance Of Class I Steam Railways In The United States"

This NBER data series m03043 appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: m03043