Release: NBER Macrohistory Database
1936-1940 Data Were Computed From Data In Statistics Of Income. The Figure For 1938 Given Here Is Adjusted To Conform To The 1937 Industrial Classification. The Figures For 1939 And 1940 Have Been Adjusted To Conform To The 1938 Standard Industrial Classification. The Figure For 1938, If Adjusted To The 1938 Standard, Would Be 156.8. Source: Bureau Of Internal Revenue, Statistics Of Income, 1916 And Subsequent Issues.
This NBER data series a09012 appears on the NBER website in Chapter 9 at http://www.nber.org/databases/macrohistory/contents/chapter09.html.
NBER Indicator: a09012
National Bureau of Economic Research, Corporations Reporting Income, Mining and Quarrying for United States [A09012USA144NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/A09012USA144NNBR, October 16, 2017.