- Labor & Employment Consultants, Leesport
- Laboratories Dental, Leesport
- Laboratories Medical, Leesport
- Land Development & Planning Engineer, Leesport
- Land Surveyor, Leesport - Land Surveying Services
- Landscape Contractors & Designers, Leesport
- Landscaping, Leesport
- Landscaping Materials & Supplies, Leesport
- Laundry & Dry Cleaning Equipment & Supplies, Leesport - Cleaners & Dryers Sales, Repair, Service & Leasing
- Lawn & Garden Chemicals, Insecticides & Fertilizers, Leesport
- Lawn & Garden Equipment & Supplies, Leesport
- Lawn & Garden Services, Leesport
- Lawn Maintenance Services, Leesport
- Lawn Mowers & Power Equipment, Leesport
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- Legal & Tax Services, Leesport
- Libraries, Leesport
- License Services, Leesport
- Life Insurance, Leesport
- Limousine Service, Leesport
- Liquor Stores, Leesport
- Local & Short Haul Trucking Companies, Leesport
- Lodging, Leesport
- Long Haul Trucking Companies, Leesport
- Lumber & Lumber Products, Leesport
- Lumber & Lumber Products, Leesport
- Lumber Companies, Leesport - Wholesale, Manufacturers & Suppliers
- Lutheran Church, Leesport
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