Series Is Presented Here As Three Variables--(1)--Original Data, 1870-1926 (2)--Original Data, 1925-1950 (3)--Original Data, 1941-1961. This Variable Was Compiled From Data Collected From Various Sources. Data Were Obtained Chiefly From News Items Appearing In Issues Of Railway And Iron Trade Periodicals. Sources Made No Claims To Completeness Or Accuracy Of Information. Data Were Also Collected From The Bulletin Of The American Iron And Steel Association, The U.S. Bureau Of Statistics "Monthly Reports", And From Files Of Railroad Companies. Source: John Partington, Railroad Purchasing And The Business Cycle (Brookings Institution), Pp. 219-226.
This NBER data series q06026a appears on the NBER website in Chapter 6 at http://www.nber.org/databases/macrohistory/contents/chapter06.html.
NBER Indicator: q06026a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Locomotives Ordered By Railroads for United States [Q0626AUSQ481NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q0626AUSQ481NNBR/, August 2, 2015.