Source: US. Bureau of Labor Statistics
Release: Employment Situation
The series comes from the 'Current Population Survey (Household Survey)'
The source code is: LNU03008516
US. Bureau of Labor Statistics, Number of Civilians Unemployed for 15 Weeks and Over [LNU03008516], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/LNU03008516, December 4, 2016.