Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Millions of Dollars, Not Seasonally Adjusted

Frequency:  Monthly

Series Is Presented Here As Four Variables--(1)--Original Data, 1915-1934 (2)--Original Data, 1933-1948 (3)--Original Data, 1942-1948 (4)--Original Data, 1948-1961 Data In This Variable Cover Class A Companies -- Those Having Annual Operating Revenues In Excess Of $250,000. Under Federal Communications Commission Jurisdiction, Class A Companies Are Those With Operating Revenues Of Over $100,000, But Only Those Having Over $250,000 ("Large Companies") File Monthly Reports. Data Cover Approximately 103 Companies. Source: Interstate Commerce Commission Files

This NBER data series m03018a appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: m03018a