Series Is Presented Here As Two Variables--(1)--Original Data, 1919-1960 (2)--Original Data, 1951-1966. Data For December, 1962 To March 1963 Are Estimated Due To A Newspaper Strike. Source: National Industrial Conference Board, Unpublished Table Supplied By Delos R. Smith.
This NBER data series m08082b appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08082b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Help-Wanted Advertising In Newspapers for United States [M0882BUSM350NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0882BUSM350NNBR/, October 4, 2015.