For Method Of Computation See Description Of Series. July 1930-1932 Data Were Computed By NBER By The Same Method. A 10% Pay Cut Occured February 1, 1932. For Cuts Before And After See Statistics Of Railways, Icc, 1932, P. 5-26. Source: Computed By The National Industrial Conference Board From Data In "Wage Statistics", Interstate Commerce Commission.
This NBER data series q08045 appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: q08045
Release: NBER Macrohistory Database
National Bureau of Economic Research, Average Weekly Earnings, First Class Railroad Employees, Unskilled Labor for United States [Q08045USQ052NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q08045USQ052NNBR, February 14, 2016.