Release: NBER Macrohistory Database
Content: Computed By NBER By Successive Subtraction Of Mileage Owned (First Track Only) On June 30 Of Each Year. Covers Class I, Ii, And Iii Railroads, Nonoperating Subsidiaries, And Some Railways Not Filing Annual Reports. Up Through June 30, 1908 Increases Include Switching And Terminal Companies; Thereafter, Do Not. Source: Interstate Commerce Commission, "Annual Report Of The Statistics Of Railways In The United States", 1926, P.Xcviii.
This NBER data series a02083a appears on the NBER website in Chapter 2 at http://www.nber.org/databases/macrohistory/contents/chapter02.html.
NBER Indicator: a02083a
National Bureau of Economic Research, Increases in Railroad Mileage Owned for United States [A0283AUSA374NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/A0283AUSA374NNBR, November 26, 2021.