Subject
- Telephone cables4
- Transportation--Canada4
- Transportation--United States4
- Canada--Administrative and political divisions3
- Geoscientific Information3
- Groundwater3
- Hydrogeology3
- United States--Administrative and political divisions3
- Populated places2
- Provinces2
- States2
- Streets2
- Zip codes2
- Agricultural sites1
- Air travel1
- Airport buildings1
- Bodies of water1
- Bus stops1
- Capitals (Cities)1
- Centers (Places for activities)1