Release: NBER Macrohistory Database
Series Is Presented Here As Two Variables--(1)--Original Data, 1920-1935 (2)--Original Data, 1935-1943 Data Excludes Switching And Terminal Companies; Combination And Observation Passenger Car-Miles. Data For August-December 1935 Were Computed By Dividing "Revenue Passenger-Miles" By "Passenger-Miles Per Car-Mile." Source: Interstate Commerce Commission, "Revenue Traffic Statistics Of Class I Steam Railways In The United States."
This NBER data series m03057b appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.
NBER Indicator: m03057b
National Bureau of Economic Research, Passenger Car-Miles, Class I Railroads for United States [M0357BUSM427NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/M0357BUSM427NNBR, June 23, 2021.