Series Is Presented Here As Three Variables--(1)--Original Data, 1855-1937 (2)--Original Data, 1918-1957 (3)--Original Data, 1949-1964. Figures Are For 20 Railroad Stocks. Source: 1918-1940 Data Are From Standard And Poor'S Corporation, Long Term Security Price Index Record (Through December 31, 1940) Pp.9-10; 1941-1942 Data Are From The Security Price Index Record, 1941 And 1942; 1943-1946 Data Are From Current Statistics Combined With Basic Statistics Annually; 1947 Data Are From Current Statistics; 1948-1957 Data Are From The Survey Of Current Business.
This NBER data series m11005b appears on the NBER website in Chapter 11 at http://www.nber.org/databases/macrohistory/contents/chapter11.html.
NBER Indicator: m11005b
Release: NBER Macrohistory Database
National Bureau of Economic Research, American Railroad Stock Prices for United States [M1105BUSM343NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M1105BUSM343NNBR, February 13, 2016.