- Laboratories Dental, Erie
- Laboratories Medical, Erie
- Land Surveyor, Erie - Land Surveying Services
- Landscape Contractors & Designers, Erie
- Landscaping, Erie
- Landscaping Materials & Supplies, Erie
- Lawn & Garden Equipment & Supplies, Erie
- Lawn & Garden Services, Erie
- Lawn & Garden Sprinkler Systems, Erie
- Lawn & Tree Service, Erie
- Lawn Maintenance Services, Erie
- Lawn Mower Repair & Blade Sharpening Service, Erie
- Lawn Mowers & Power Equipment, Erie
- Lawyers & Attorneys, Erie
- Legal Professionals, Erie
- Libraries, Erie
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- Life Insurance, Erie
- Liquor & Beer Manufacturers, Erie
- Liquor Stores, Erie
- Livestock, Erie
- Livestock Auctions, Erie
- Livestock Auctions, Erie
- Livestock Trailers, Erie
- Loans Personal, Erie
- Locks, Erie
- Locksmiths, Erie - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Erie
- Lodging, Erie
- Long Haul Trucking Companies, Erie
- Lumber & Lumber Products, Erie
- Lumber & Lumber Products, Erie
- Lutheran Church, Erie
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