Release: NBER Macrohistory Database
The Data For 1916 Were Computed By NBER By Adding Items For "Department Stores" And "Wholesale Jobbers." See Crum,"Corporate Earning Power," P. 327. For 1936-1940, The Data Were Computed By NBER From Data In Statistics Of Income (See Notes). The 1938 Data Were Adjusted By NBER To Conform To 1937 Industrial Classification (See Notes). The Data For 1939-1940 Are Based On 1938 Standard Industrial Classification. Source: Bureau Of Internal Revenue: Statistics Of Income, 1916 And Successive Years.
This NBER data series a09020 appears on the NBER website in Chapter 9 at http://www.nber.org/databases/macrohistory/contents/chapter09.html.
NBER Indicator: a09020
National Bureau of Economic Research, Corporate Net Income Trade for United States [A09020USA144NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/A09020USA144NNBR, August 17, 2017.