- Laboratories Dental, Morton
- Laboratories Medical, Morton
- Landscape Contractors & Designers, Morton
- Landscaping, Morton
- Lawn & Garden Equipment & Supplies, Morton
- Lawn & Garden Services, Morton
- Lawn Maintenance Services, Morton
- License Plates & Frames, Morton
- License Services, Morton
- Life Insurance, Morton
- Liquor Stores, Morton
- Live Theaters, Morton
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- Loans Personal, Morton
- Locks, Morton
- Locksmiths, Morton - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Morton
- Lodging, Morton
- Loggers, Morton
- Long Haul Trucking Companies, Morton
- Lumber & Lumber Products, Morton
- Lumber & Lumber Products, Morton
- Lumber & Wood Products Manufacturers, Morton
- Lumber Companies, Morton - Wholesale, Manufacturers & Suppliers
- Lutheran Church, Morton
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