Release: NBER Macrohistory Database
Data Refer To End Of The Month Figures For Male And Female Trade Union Members. Source: Statistiches Reichsamt, Reichsarbeitsblatt
This NBER data series m08020 appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08020
National Bureau of Economic Research, Unemployment of Trade Union Members, Total for United States [M08020USM514NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/M08020USM514NNBR, April 25, 2017.