- Labels & Tags, Newtown Square
- Labor & Employment Consultants, Newtown Square
- Laboratories Medical, Newtown Square
- Laboratories Testing Drug Screening & Analysis, Newtown Square
- Land Companies, Newtown Square
- Landscape Contractors & Designers, Newtown Square
- Landscape Garden Services, Newtown Square
- Landscaping, Newtown Square
- Lawn & Garden Equipment & Supplies, Newtown Square
- Lawn & Garden Services, Newtown Square
- Lawn & Garden Sprinkler Systems, Newtown Square
- Lawn Maintenance Services, Newtown Square
- Lawn Mowers & Power Equipment, Newtown Square
- Lawyers & Attorneys, Newtown Square
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- Legal & Tax Services, Newtown Square
- Legal Professionals, Newtown Square
- Libraries, Newtown Square
- Life Insurance, Newtown Square
- Lighting Fixtures & Equipment, Newtown Square
- Limousine Service, Newtown Square
- Liquor Stores, Newtown Square
- Livestock, Newtown Square
- Livestock Trailers, Newtown Square
- Loans Personal, Newtown Square
- Locksmiths, Newtown Square - Residence, Commercial, Safe & Auto Car Locksmith
- Lodging, Newtown Square
- Lumber & Lumber Products, Newtown Square
- Lutheran Church, Newtown Square
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