Release: NBER Macrohistory Database
Source: Interstate Commerce Commission, Computed By NBER
This NBER data series m09045 appears on the NBER website in Chapter 9 at http://www.nber.org/databases/macrohistory/contents/chapter09.html.
NBER Indicator: m09045
National Bureau of Economic Research, Net Railroad Operating Income, Class I Railroads, for United States [M09045USM144SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/M09045USM144SNBR, July 28, 2017.