- Radio Stations & Broadcasting Companies, Fort Madison
- Rail Line Travel Agents & Agencies, Fort Madison
- Railroad, Fort Madison - Commuter & Passenger Transport
- Railroad Companies, Fort Madison
- Railroad Services, Fort Madison
- Ready Mix Concrete, Fort Madison - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Fort Madison
- Real Estate, Fort Madison - Agent, Broker & Companies
- Real Estate Agent - Property Lessors, Fort Madison
- Real Estate Services, Fort Madison
- Recycling Scrap & Waste Materials, Fort Madison - Scrap Metal, etc
- Refrigeration & Air Conditioning Contractors, Fort Madison - Installation, Repair, Sales & Service
- Refrigeration & Cooling Equipment, Parts & Supplies , Fort Madison - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, Fort Madison - Ac, Freezer, Refrigerator Repair
- Rehabilitation Centers, Products & Services, Fort Madison
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- Rehabilitation Specialists, Fort Madison
- Religious Organizations, Fort Madison
- Rental & Leasing Business Equipment, Fort Madison
- Repair Services, Fort Madison
- Residential, Fort Madison
- Residential Apartments, Fort Madison
- Residential Care Facilities, Fort Madison
- Residential Construction Contractors, Fort Madison - General Contractors
- Restaurants/Food & Dining, Fort Madison
- Retail Book Stores, Fort Madison
- Retirement Communities & Home, Assisted Living & Apartments, Fort Madison
- Road Construction, Fort Madison - Companies & Contractors
- Road Construction & Repair Contractors, Fort Madison
- Rods, Springs & Suspension Equipment & Supplies, Fort Madison
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