- Mail Delivery Service, Wallace
- Malls & Shopping Centers, Wallace
- Management Consultants & Services, Wallace
- Manicurists & Pedicurists, Wallace
- Manufacturing, Wallace
- Manufacturing Products, Wallace
- Massage Therapists & Professional, Wallace
- Massage Therapy, Wallace
- Membership Sports & Recreation Clubs, Wallace
- Metal Repair Service & Blacksmith, Wallace - Iron Works
- Methodist Church, Wallace
- Micro Breweries, Wallace
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- Mining, Wallace
- Mining Contractors, Wallace - Mining Companies, Contractors & Brokers
- Mining Equipment & Supplies Service & Repair, Wallace
- Mining, Crude-Oil Production, Wallace - Mining Companies
- Miscellaneous Government, Wallace
- Mortgage Bankers & Correspondents, Wallace
- Mortgage Companies, Wallace
- Mortgage Contracts & Services, Wallace
- Mortgages & Loans, Wallace
- Motor Vehicle, Wallace
- Movie Theaters, Wallace
- Museums, Wallace
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