- Laboratories Medical, Sandusky
- Laminated Plastic Plate & Sheet Manufacturers, Sandusky
- Land Surveyor, Sandusky - Land Surveying Services
- Landscape Contractors & Designers, Sandusky
- Landscaping, Sandusky
- Lawn & Garden Chemicals, Insecticides & Fertilizers, Sandusky
- Lawn & Garden Equipment & Supplies, Sandusky
- Lawn Mower Repair & Blade Sharpening Service, Sandusky
- Lawn Mowers & Power Equipment, Sandusky
- Lawyers & Attorneys, Sandusky
- Legal Professionals, Sandusky
- Libraries, Sandusky
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- Lingerie & Underwear for Women, Sandusky - Bras, Panties, Bustiers, Corsets & More
- Loans Personal, Sandusky
- Locks, Sandusky
- Locksmiths, Sandusky - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Sandusky
- Lodging, Sandusky
- Long Haul Trucking Companies, Sandusky
- Lumber & Lumber Products, Sandusky
- Lumber & Lumber Products, Sandusky
- Lumber Companies, Sandusky - Wholesale, Manufacturers & Suppliers
- Lutheran Church, Sandusky
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