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Title:               Total Locomotives Assigned to Freight and Passenger Service, Class I Railroads for United States
Series ID:           A0173AUSA481NNBR
Source:              National Bureau of Economic Research
Release:             NBER Macrohistory Database (Not a Press Release)
Seasonal Adjustment: Not Seasonally Adjusted
Frequency:           Annual
Units:               Number of Locomotives
Date Range:          1921-01-01 to 1942-01-01
Last Updated:        2012-08-15 3:47 PM CDT
Notes:               Switching And Terminal Companies Are Excluded Through 1936. They Were
                     Included Beginning In 1937. Data Are As Of December 31. Source:
                     Computed By NBER By Adding Series (Locomotives Assigned To Freight And
                     Passenger Service, Respectively).
                     
                     This NBER data series a01273a appears on the NBER website in Chapter 1
                     at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
                     
                     NBER Indicator: a01273a

DATE        VALUE
1921-01-01  48169
1922-01-01  47682
1923-01-01  47762
1924-01-01  47625
1925-01-01  46074
1926-01-01  45044
1927-01-01  43922
1928-01-01  42668
1929-01-01  40905
1930-01-01  40422
1931-01-01  39449
1932-01-01  38275
1933-01-01  36663
1934-01-01  34834
1935-01-01  33728
1936-01-01  32563
1937-01-01  32086
1938-01-01  31450
1939-01-01  30206
1940-01-01  29246
1941-01-01  28828
1942-01-01  28673