Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Number of Locomotives, Not Seasonally Adjusted

Frequency:  Quarterly

Notes:

Series Is Presented Here As Three Variables--(1)--Original Data, 1870-1926 (2)--Original Data, 1925-1950 (3)--Original Data, 1941-1961. Source: Railway Age, "Annual Statistical And Outlook" Issues

This NBER data series q06026b appears on the NBER website in Chapter 6 at http://www.nber.org/databases/macrohistory/contents/chapter06.html.

NBER Indicator: q06026b