LINKS
Crime Magazine
A Guide to Classic Mystery and Detection
The Gumshoe Site
Mystery Guide
Mystery Net
Mystery Reader's Corner
Mystery Readers Journal
Mystery Scene
Over My Dead Body
PBS: Mystery
Red InkWorks
Scarlet Street
Unsolved Mysteries
Copyright and Resources
U. S. Copyright Office
Law Enforcement Organizations
CIA
Department of Justice
Federal Bureau of Investigation
Hong Kong Police Force
Interpol
National Criminal Intelligence Service
New Scotland Yard
PoliceOne
Prefecture-Police-Paris
[in French] 
Royal Canadian Mounted Police
Singapore Police Force
Organizations for Writers
American Crime Writers League
Association of Author's Representatives
Authors Guild
Crime Writers Association
Crime Writers of Canada
Malice Domestic
Mystery Writers of America - Florida Chapter
Mystery Writers of America
The National Writers Union
Romance Writers of America
Sisters in Crime - Internet Chapter
Writers' Magazines and Resources
ByLine
Crime Spider
Frankfurt eBook Awards
Maui Writers Conference
The Mystery Writers' Forum
Publishers Weekly
Storyteller Magazine
WriteLink
The Write Market
Writer's Digest
Writers' Journal