- Laboratories Dental, Spooner
- Laboratories Medical, Spooner
- Laboratory Equipment Repair & Service, Spooner
- Land Surveyor, Spooner - Land Surveying Services
- Landscape Contractors & Designers, Spooner
- Landscaping, Spooner
- Laser Equipment Repair & Service, Spooner
- Laundry Self Service, Spooner
- Lawn & Garden Equipment & Supplies, Spooner
- Lawn & Garden Sprinkler Systems, Spooner
- Lawyers & Attorneys, Spooner
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- Legal Professionals, Spooner
- Liquor Stores, Spooner
- Livestock, Spooner
- Livestock Feeding Service, Spooner
- Loans Personal, Spooner
- Lodging, Spooner
- Long Haul Trucking Companies, Spooner
- Lumber & Lumber Products, Spooner
- Lumber & Lumber Products, Spooner
- Lumber & Wood Products Manufacturers, Spooner
- Lutheran Church, Spooner
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