- Hardware Stores, Machias
- Health & Medical, Machias
- Health And Medical Centers, Machias
- Health Care Information & Services, Machias
- Health Insurance, Machias
- Healthcare Providers, Practitioners & Professionals, Machias
- Heating & Air-Conditioning Contractors, Machias - HVAC Contractors - Installation, Repair, Replace Service, etc
- Heating Contractors, Machias - Heating Systems - Installation & Repair
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- Highway Surfacing & Paving Contractors, Machias - Pavers - Paving Companies
- Holiday & Seasonal Merchandise Stores & Products, Machias
- Home Decor Stores, Machias - Home Decorations, Supplies & Accessories
- Home Health Care, Machias - Agencies & Services
- Hospices, Machias - Hospice Services
- Hospital, Dental & Medical Equipment & Supplies, Machias
- Hospitals, Machias
- Hotels & Motels, Machias
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