Security Manual Links
US Department of Commerce - Manual of Security Policies and Procedures
Peace Brigades International - Protection Manual for Human Rights Defenders
US Department of Defense - Minimum Antiterrorism Standards for Buildings
Anti-Defamation League - Protecting Your Jewish Institution: Security Strategies for Today's Dangerous World
Canada Public Works and Government Services - Industrial Security Manual
Feel free to post any other useful, "non-standard" security manuals you know about.