Police Quest Series

Adventureland: Police Quest
Lists the games in the Police Quest series.
http://www.if-legends.org/~adventure/Sierra_On-Line,_Inc/PQ.html

Just Adventure: The Evolution of Police Quest
Retrospective of the series through SWAT 3 by Matthew Desmond.
http://www.justadventure.com/articles/Teenage/Police_Quest.shtm

Adventure Collective: A Brief History of Police Quest
Retrospective of the series by James Helstrom. (November 5, 1999)
http://www.adventurecollective.com/editorials/editorial-briefhistoryofpolicequest.htm