The map book is more detailed than the street map and can be useful in locating specific structures or areas in Gloucester.
The E-911 Response Map Book includes:
- Emergency Response District Sheets
- Place Name Index
- Road Name Index
- Route Number Index

Each map sheet may feature:
- Addressed Structures including, but not limited to:
- Apartments
- Businesses
- Condos
- Churches
- Garage Apartments
- Post Offices
- Professional Centers
- Schools
- Shopping Centers
- Area Names
- Fire Hydrants
- Helicopter Landing Areas
- Landmarks
- Marinas
- Mobile Home Parks
- Public Boat Landings
- Public and/or Private Roads
- Route Numbers
- Subdivisions
- Transmission Lines