Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Index 1935-1939=100, Not Seasonally Adjusted

Frequency:  Monthly

Data Are Based On Average Carloadings Per Working Day. Source: Data For 1920-1953: Federal Reserve Board, Bulletins For June 1941 And Thereafter

This NBER data series m03031 appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: m03031