Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Millions of Dollars, Not Seasonally Adjusted

Frequency:  Monthly

After 1961, Monthly Data No Longer Published, Only Quarterly Data Available. Source: Computed By NBER From Interstate Commerce Commission Original Data Of Total Operating Revenues Series Minus Total Operating Expenses Of Railroads Series, Class I Railroads

This NBER data series m09026 appears on the NBER website in Chapter 9 at http://www.nber.org/databases/macrohistory/contents/chapter09.html.

NBER Indicator: m09026