The series comes from the 'Current Population Survey (Household Survey)'
The source code is: LNU02376940
Source: US. Bureau of Labor Statistics
Release: Employment Situation
US. Bureau of Labor Statistics, Employment-Population Ratio: With No Disability, 16 to 64 years, Men [LNU02376940], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/LNU02376940/, July 31, 2015.