Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Millions of Passenger Car-Miles, Not Seasonally Adjusted

Frequency:  Monthly

Series Is Presented Here As Two Variables--(1)--Original Data, 1920-1935 (2)--Original Data, 1935-1943 NBER Computed Data For 1920-1934 By Dividing "Revenue Passenger-Miles" By "Passenger-Miles Per Car-Mile." Data Exclude Switching And Terminal Companies. Source: Interstate Commerce Commission, Data For 1920-1934: Computed By NBER From "Revenue Traffic Statistics Of Class I Steam Railways In The United States". Data For 1935: Direct From Same Source.

This NBER data series m03057a appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: m03057a