- Labeling Service, Winchester
- Labor Organizations, Winchester
- Laboratories Medical, Winchester
- Laboratories Pathological, Winchester
- Land Surveyor, Winchester - Land Surveying Services
- Landscape Contractors & Designers, Winchester
- Landscaping, Winchester
- Late Night Restaurants, Winchester
- Laundry Equipment Rental & Leasing, Winchester
- Lawn & Garden Chemicals, Insecticides & Fertilizers, Winchester
- Lawn & Garden Equipment & Supplies, Winchester
- Lawn & Garden Services, Winchester
- Lawn Maintenance Services, Winchester
- Lawn Mower Repair & Blade Sharpening Service, Winchester
- Lawn Mowers & Power Equipment, Winchester
- Lawyers & Attorneys, Winchester
- Leather Goods Cleaners & Dyers, Winchester
- Legal & Tax Services, Winchester
- Legal Professionals, Winchester
- Lennox Air Conditioning, Winchester - Air Conditioner Contractors & Systems
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- Libraries, Winchester
- Life Insurance, Winchester
- Lighting Fixtures & Equipment, Winchester
- Liquor Stores, Winchester
- Livestock, Winchester
- Livestock Feeding Service, Winchester
- Loans Check Cashing, Winchester
- Loans Personal, Winchester
- Loans Title Services, Winchester
- Local & Short Haul Trucking Companies, Winchester
- Lodging, Winchester
- Lodging Services, Winchester
- Loggers, Winchester
- Long Haul Trucking Companies, Winchester
- Lubricating Oils , Winchester - Motor Oil
- Lumber & Lumber Products, Winchester
- Lumber & Lumber Products, Winchester
- Lumber & Wood Products Manufacturers, Winchester
- Lumber Treating & Drying, Winchester
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