The series comes from the 'Current Population Survey (Household Survey)'
The source code is: LNU01376940
Source: US. Bureau of Labor Statistics
Release: Employment Situation
US. Bureau of Labor Statistics, Civilian Labor Force Participation Rate: With No Disability, 16 to 64 years, Men [LNU01376940], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/LNU01376940/, August 2, 2015.