Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Millions of Pounds, Not Seasonally Adjusted

Frequency:  Annual

Notes:

Series Is Presented Here As Two Variables--(1)--Original Data, 1902-1916 (2)--Original Data, 1916-1945. Data Are For All Railroads. Tractive Power For Unclassified Railroads Not Included. 1902-1907 Data Were Computed By NBER By Adding Items For Single Expansion, Four Cylinder Compound, And Two Cylinder Compound. Figures Include Switching And Terminal Companies, Except 1909-1914 And Exclude Class Iii For 1913-1916. Data Are For Years Ending June 30. Source: Interstate Commerce Commission, Annual Reports Of Statistics Of Railways In The United States.

This NBER data series a01156a appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.

NBER Indicator: a01156a