FBI Uniform Crime Report
http://www.fbi.gov/ucr/ucr.htm
gunpolicy.org
Harvard Injury Control Research Center
http://www.hsph.harvard.edu/research/hicrc/
National Violent Death Reporting System
http://www.cdc.gov/ncipc/profiles/nvdrs/default.htm
Web-based Injury Statistics Query and Reporting System
http://www.cdc.gov/ncipc/wisqars/default.htm