- Hair Care Professionals, Winsted
- Hardware Stores, Winsted
- Health & Diet Food Products - Wholesale & Retail, Winsted
- Health & Medical, Winsted
- Health And Medical Centers, Winsted
- Health Care Information & Services, Winsted
- Health Clubs & Gymnasiums, Winsted
- Healthcare Providers, Practitioners & Professionals, Winsted
- Heating & Air-Conditioning Contractors, Winsted - HVAC Contractors - Installation, Repair, Replace Service, etc
- Heavy Haul Trucking Companies, Winsted - Heavy Equipment & Machinery Hauling & Transportation
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- Historical Organizations, Winsted
- Historical Societies, Winsted
- Homeowners Insurance, Winsted
- Horse Stables, Winsted
- Hospital, Dental & Medical Equipment & Supplies, Winsted
- Hospitals, Winsted
- Household & Commercial Appliances Stores, Winsted
- Household Goods & Furniture Storage , Winsted
- Housing Authority, Winsted
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