Series Is Presented Here As Three Variables--(1)--Original Data, 1870-1926 (2)--Original Data, 1920-1942 (3)--Original Data, 1934-1964. This Series Is Compiled From Data Collected From Various Sources Obtained Chiefly From News Items Appearing In Issues Of Railway And Iron Trade Periodicals. The Sources Made No Claim Of Completeness Or Accuracy Of Information; See Also The Bulletin Of The American Iron And Steel Association, Monthly Reports Of The Bureau Of Statistics, And The Files Of Railroad Companies. Data From Railway Age Cover The Principal Transactions. 1942 Data Exclude Government Orders. Source: Railway Age Files For 1920-1924 Data; Survey Of Current Business, Annual Supplements For 1932 And Following; For 1925-September, 1938 Data; The Annalist For October, 1938-1939 Data; Railway Age Files For 1940-1942 Data.
This NBER data series m06028a appears on the NBER website in Chapter 6 at http://www.nber.org/databases/macrohistory/contents/chapter06.html.
NBER Indicator: m06028a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Orders of Railroad Passenger Cars for United States [M0628AUSM477NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0628AUSM477NNBR/, August 27, 2015.