- Land Surveyor, Littleton - Land Surveying Services
- Landscape Contractors & Designers, Littleton
- Landscaping, Littleton
- Lawn & Garden Chemicals, Insecticides & Fertilizers, Littleton
- Lawn & Garden Equipment & Supplies, Littleton
- Lawn & Garden Services, Littleton
- Lawn Maintenance Services, Littleton
- Lawyers & Attorneys, Littleton
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- Libraries, Littleton
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- Lighting Fixtures & Equipment, Littleton
- Liquor Stores, Littleton
- Live Theaters, Littleton
- Lodging, Littleton
- Log Homes - Log Cabins Builders, Littleton - Building Contractors
- Long Haul Trucking Companies, Littleton
- Lumber & Lumber Products, Littleton
- Lumber & Lumber Products, Littleton
- Lumber Brokers, Littleton
- Lutheran Church, Littleton
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