- Hair Care Professionals, Gorham
- Hamburger Restaurants, Gorham
- Hardware Stores, Gorham
- Hazardous Materials & Waste Services, Gorham
- Health & Medical, Gorham
- Health And Medical Centers, Gorham
- Health Clubs & Gymnasiums, Gorham
- Healthcare Providers, Practitioners & Professionals, Gorham
- Hearing Aids & Assistive Devices & Supplies, Gorham - Hearing Devices
- Heating & Air-Conditioning Contractors, Gorham - HVAC Contractors - Installation, Repair, Replace Service, etc
- Heating & Plumbing Supplies Stores, Gorham
- Heating Contractors, Gorham - Heating Systems - Installation & Repair
- Heating, Ventilating & Air Conditioning Engineer, Gorham - HVAC Engineers
- Highway Surfacing & Paving Contractors, Gorham - Pavers - Paving Companies
- Historical Organizations, Gorham
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- Historical Societies, Gorham
- Home Additions & Remodeling Contractors, Gorham - Refinishing & Restoration
- Home Decor Stores, Gorham - Home Decorations, Supplies & Accessories
- Home Furnishings, Gorham - Home Decor Stores, Items & Accessories
- Home Health Care, Gorham - Agencies & Services
- Homeowners Insurance, Gorham
- Horseback Riding Lessons & Instruction, Gorham - Horse Riding School
- Hospitals, Gorham
- Hot Dog Restaurants, Gorham
- House & Apartment Cleaning, Gorham
- Household Goods & Furniture Storage , Gorham
- Humidifying & Dehumidifying Supplies, Equipment & Service, Gorham
- Hydraulic Equipment & Supplies, Gorham
- Hydraulic Equipment Repair & Service, Gorham
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