Series Is Presented Here As Two Variables--(1)--Original Data, 1947-1951 (2)--Original Data, 1951-1968. "Profit Rates Of Manufacturing Corporation 1947-1962," Ftc (1963) May Also Be Used For Summary Tabulation. The New Sample Starts In The Third Quarter Of 1951; The First And Second Quarters Are Adjusted To New Sample On The Basis Of Estimates Of The Old Sample. Source: Federal Trade, And Securities And Exchange Commissions: Quarterly Financial Report For Manufacturing Corporations.
This NBER data series q09101a appears on the NBER website in Chapter 9 at http://www.nber.org/databases/macrohistory/contents/chapter09.html.
NBER Indicator: q09101a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Profits (After Taxes) Per Dollar of Sales, All Manufacturing Corporations for United States [Q0901AUSQ259NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q0901AUSQ259NNBR, May 30, 2016.