This article is from the can.talk.guns FAQ, by Skeeter Abell-Smith email@example.com with numerous contributions by others.
Statistics Canada/Centre for Justice Statistics: many,
including Homicide Juristat
U.S. Bureau of the Census, Statistical Abstract of the United States.
United States Department of Justice, Bureau of Justice Statistics,
Sourcebook of Criminal Justice Statistics.
[Published how often?]
U.S. Department of Justice, Federal Bureau of Investigation, Uniform
Crime Reports. Published annually.