Researchers (Beta) Dan Black Paper: Demographics of the gay and lesbian population in the United States: Evidence from available systematic data sources Data: General Social Survey (GSS) Data: National Health and Social Life Survey (NHSLS) Data: U.S. Census (1999) Paper: How robust is the evidence on the effects of college quality? Evidence from matching Data: National Longitudinal Survey of Youth (1979) Paper: On-the-Job Training Data: Small Business Administration Survey (1992) Jens Ludwig Paper: Guns in America: results of a comprehensive national survey on firearms ownership and use Data: National Study of Private Ownership of Firearms in the United States, 1994 Paper: Concealed-Gun-Carrying Laws and Violent Crime: Evidence from State Panel Data Data: Statistical Abstracts for the United States Data: U.S. Census