Resources for Crime and Police Procedural Writers

The Internet contains many resources for crime and police procedural writers. I've listed some of my favorite websites. You can use them to create more accurate and believable descriptions of investigations and crime scene analysis and to link to other crime sites.
This site has many articles on evidence collection and books on forensics.
You can read special reports, articles and research written by police columnists and law enforcement personnel.
Headline stories of crimes and information on investigations, technology, police life and tactics.
You’ll find a great collection of links to crime resources on this site.

Other Resources
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An author friendly bookstore that stocks a wide range of mysteries and thrillers.
A wonderful bookstore known for hosting authors at their monthly Totally Criminal Cocktail Hour.