This collection of articles summarizes knowledge and research about how gun violence affects children and youth and discusses which policies hold promise for reducing youth gun violence. The papers are: (1) "Statement of Purpose" (Richard E. Behrman); "Children, Youth, and Gun Violence: Analysis and Recommendations" (Kathleen Reich, Patti L. Culross, and Richard E. Behrman); "Firearm-Related Death and Injury among Children and Adolescents" (Lois A. Fingerhut and Katherine Kaufer Christoffel); "Youth, Guns, and Violent Crime" (Alfred Blumstein); "Where the Guns Come From: The Gun Industry and Gun Commerce" (Garen J. Wintemute); "Mitigating the Effects of Gun Violence on Children and Youth" (James Garbarino, Catherine P. Bradshaw, and Joseph A. Vorrasi); "The Costs of Gun Violence against Children" (Philip J. Cook and Jens Ludwig); "Behavior-Oriented Approaches to Reducing Youth Gun Violence" (Marjorie S. Hardy); "Product-Oriented Approaches to Reducing Youth Gun Violence" (Stephen P. Teret and Patti L. Culross); "Policing Guns and Youth Violence" (Jeffrey Fagan); "Public Opinion about Gun Policies" (Tom W. Smith); and "Children and Guns: Advocacy Groups Speak Out" (James Forman, Jr.). Federal firearms laws and a list of acronyms are included. (Contains 28 references.) (SM)