Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Number of Locomotives, Not Seasonally Adjusted

Frequency:  Monthly

Notes:

Daily Averages Are Used. Source: Interstate Commerce Commission, Freight And Passenger Service Operating Statistics Of Class I Steam Railways In The United States.

This NBER data series m01264a appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.

NBER Indicator: m01264a