- Garbage & Rubbish Removal, Galena
- Gastroenterologists, Galena - GI Doctors, Physicians & Surgeons (Gastroenterology)
- General Business Services, Galena
- General Merchandise Stores, Galena
- General Surgeons, Galena - General Surgery Doctors, Physicians & Surgeons
- Generators, Compressors, Pumps, Motors & Fans, Galena
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- Gifts, Cards & Stationery Stores, Galena
- Glass & Glass Products, Galena
- Glass - Auto, Float, Plate, Window & Doors, Galena
- Glass Plate Windows, Galena
- Government, Galena
- Ground Transportation, Except Passenger, Galena
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