- Bakeries, Smithsburg
- Banks, Smithsburg
- Barber Shops, Smithsburg
- Bars, Smithsburg
- Basement Waterproofing - Waterproofing Contractors, Smithsburg - Foundation & Concrete Waterproofing
- Bathtubs & Sinks - Repair & Refinishing, Smithsburg - Bathtub Refinishing, Repair & Resurfacing
- Beauty Salons, Smithsburg
- Beer Taverns, Smithsburg
- Billing Services, Smithsburg
- Board Of Education, Smithsburg
- Bookkeeping Services Licensed, Smithsburg
- Bookkeeping Systems & Services, Smithsburg
- Brethren Church, Smithsburg
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- Bricks, Blocks & Stone Products, Smithsburg - Companies, Wholesale, Manufacturers & Suppliers
- Builders & Contractors, Smithsburg
- Builders & Contractors - More, Smithsburg
- Builders Hardware Stores, Smithsburg
- Building Construction Consultants, Smithsburg - Construction Management & Consulting
- Building Hardware & Materials, Smithsburg
- Building Materials, Smithsburg - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Smithsburg
- Building Restoration & Preservation, Smithsburg
- Burglar Alarm Systems, Smithsburg
- Business & Professional Associations, Smithsburg
- Business Legal Services, Smithsburg
- Business Services, Smithsburg
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