- Bakeries, Gilbertsville
- Banks, Gilbertsville
- Banners, Pennants & Flags, Gilbertsville
- Barbers, Gilbertsville
- Bars, Gilbertsville
- Battery, Gilbertsville - Retail Batteries Stores
- Battery Storage, Gilbertsville
- Battery Stores, Gilbertsville
- Beauty Salons, Gilbertsville
- Beer & Wine Stores, Gilbertsville
- Bible Church, Gilbertsville
- Boat Services, Gilbertsville
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- Bonds, Gilbertsville
- Brick Masonry & Bricklayer Contractors, Gilbertsville - Brick Mason - Install & Repair
- Builders & Contractors, Gilbertsville
- Builders & Contractors - More, Gilbertsville
- Building Construction Consultants, Gilbertsville - Construction Management & Consulting
- Building Materials & Supplies, Gilbertsville
- Building Site Preparation Contractors, Gilbertsville - Land Preparation & Land Clearing
- Business Insurance, Gilbertsville
- Business Legal Services, Gilbertsville
- Business Management Consultants, Gilbertsville
- Business Services, Gilbertsville
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