The Figures Refer To Employment During The Last Full Calendar Week Ending At Least One Day Before The End Of The Month. Source: U.S.Department Of Agriculture, Statistical Bulletin No236, "Farm Employment, " September 1958 (1940-57); "Farm Labor, " February 1959; March 1963, And Monthly Issues Thereafter. U.S.Department Of Agriculture, Agricultural Marketing Service, And Statistical Reporting Service, Crop Reporting Board.
This NBER data series m08338 appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08338
Release: NBER Macrohistory Database
National Bureau of Economic Research, Farm Employment, Hired Workers, Agricultural Marketing Service and Crop Reporting Board for United States [M08338USM175NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M08338USM175NNBR/, July 29, 2015.