- Labor & Employment Consultants, Bonham
- Laboratories Medical, Bonham
- Land Companies, Bonham
- Land Surveyor, Bonham - Land Surveying Services
- Late Night Restaurants, Bonham
- Laundry Self Service, Bonham
- Lawn & Garden Chemicals, Insecticides & Fertilizers, Bonham
- Lawn & Garden Equipment & Supplies, Bonham
- Lawn Mower Repair & Blade Sharpening Service, Bonham
- Lawn Mowers & Power Equipment, Bonham
- Lawyers & Attorneys, Bonham
- Legal & Tax Services, Bonham
- Legal Professionals, Bonham
- Life Insurance, Bonham
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- Live Theaters, Bonham
- Livestock, Bonham
- Livestock Auctions, Bonham
- Livestock Auctions, Bonham
- Loans Check Cashing, Bonham
- Loans Personal, Bonham
- Lodging, Bonham
- Lodging Services, Bonham
- Long Haul Trucking Companies, Bonham
- Lp Gas Equipment & Supplies, Bonham
- Lumber & Lumber Products, Bonham
- Lumber & Lumber Products, Bonham
- Lutheran Church, Bonham
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