Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Millions of Train-Miles, Not Seasonally Adjusted

Frequency:  Monthly

Series Is Presented Here As Two Variables--(1)--Original Data, 1920-1929 (2)--Original Data, 1929-1943 Data Exclude Switching And Terminal Companies. Source: Interstate Commerce Commission, "Freight And Passenger Service Operating Statistics Of Class I Steam Railways In The United States."

This NBER data series m03051a appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: m03051a