- Laboratories Dental, Hawthorne
- Laboratories Medical, Hawthorne
- Lace & Wrap Knit Fabric Mills, Hawthorne
- Land Surveyor, Hawthorne - Land Surveying Services
- Landscape Contractors & Designers, Hawthorne
- Landscaping, Hawthorne
- Laundry Self Service, Hawthorne
- Lawn & Garden Equipment & Supplies, Hawthorne
- Lawn & Garden Services, Hawthorne
- Lawn & Garden Sprinkler Systems, Hawthorne
- Lawn & Garden Supplies & Equipment, Hawthorne
- Lawn Maintenance Services, Hawthorne
- Lawyers & Attorneys, Hawthorne
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- Leather Goods Cleaners & Dyers, Hawthorne
- Legal Professionals, Hawthorne
- Life Insurance, Hawthorne
- Lighting Consultants & Designers, Hawthorne
- Lighting Fixtures & Equipment, Hawthorne
- Limousine Service, Hawthorne
- Liquid Filters, Hawthorne
- Liquor Stores, Hawthorne
- Loans Personal, Hawthorne
- Locksmiths, Hawthorne - Residence, Commercial, Safe & Auto Car Locksmith
- Lodging, Hawthorne
- Lumber Companies, Hawthorne - Wholesale, Manufacturers & Suppliers
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