Holyoke Community College Police Department: General information about the agency as well as crime prevention tips. This is an un-official site.Mike's Law Enforcement Page: Employment, patch collecting and general LEO information can be found.Penguin's Police Patch Page: I am a collector of Police Insignia. I will trade Boston Police and Massachusetts State Police shoulder patches for other state police agencies and police departments of capital cities."Special State Police Officers: Offers mailing list and exchange of ideas between officers employed within the state.