Release: NBER Macrohistory Database
Original Figures For 1923 And 1924 Were Adjusted By NBER To Exclude Amortization And Depletion To Conform With Rest Of Data. Source: U.S. Bureau Of Internal Revenue, "Statistics Of Income, 1923-1942"
This NBER data series a10060 appears on the NBER website in Chapter 10 at http://www.nber.org/databases/macrohistory/contents/chapter10.html.
NBER Indicator: a10060
National Bureau of Economic Research, Depreciation Charges of Corporations with Net Income for the United States [A10060USA027NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/A10060USA027NNBR, May 27, 2017.