Series Is Presented Here As Two Variables--(1)--Original Data, 1919-1960 (2)--Original Data, 1951-1966. Source: Metropolitan Life Insurance Company, Data For 1919-March, 1956 Are From A Photostat Table Supplied To NBER By W.A. Berridge Of Metropolitan Life Insurance Company; Following Data Are From Unpublished Monthly Tables From The Same Source.
This NBER data series m08082a appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08082a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Help-Wanted Advertising In Newspapers for United States [M0882AUSM349NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0882AUSM349NNBR/, July 29, 2015.