Series Is Presented Here As Two Variables--(1)--Original Data, 1890-1926 (2)--Original Data, 1920-1933. Source: P.H. Douglas, Real Wages In The United States, 1890-1926, P. 101.
This NBER data series a08050a appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: a08050a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Average Hourly Money Earnings In Payroll Manufacturing Industries for United States [A0850AUSA052NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/A0850AUSA052NNBR/, November 27, 2015.