Source: Bureau Of Labor Statistics, 1947-1965 Data Are From Unpublished Tabulations Furnished By Edgar R. Fiedler, Confidential; 1966-1969 Data Are From Bls Quarterly Release, "Productivity, Wages, And Prices", Table 1, Beginning With Second Quarter Issue, 1969.
This NBER data series q08348 appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: q08348
Release: NBER Macrohistory Database
National Bureau of Economic Research, Total Labor Compensation Per Work Hour, Private Economy for United States [Q08348USQ350SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q08348USQ350SNBR/, September 5, 2015.