- Racing Including Track Operations, Walker
- Radio & Tv Communications Equipment Manufacturers, Walker
- Radio Stations & Broadcast Companies, Walker - Radio, Television & Publishers Representatives
- Ready Mix Concrete, Walker - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Walker
- Real Estate, Walker - Agent, Broker & Companies
- Real Estate Services, Walker
- Refuse Collection & Disposal Services, Walker
- Refuse Systems & Garbage Disposal, Walker
- Rehabilitation Centers, Products & Services, Walker
- Rehabilitation Specialists, Walker
- Rehabilitational Job Training Services, Walker
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- Religious Goods & Church Supplies Stores, Walker
- Religious Organizations, Walker
- Repair Services, Walker
- Residential, Walker
- Residential Apartments, Walker
- Residential Construction Contractors, Walker - General Contractors
- Residential Landfills, Walker
- Restaurants - Breakfast Brunch Lunch, Walker
- Restaurants/Food & Dining, Walker
- Retirement Communities & Home, Assisted Living & Apartments, Walker
- Roofing Materials & Supplies, Walker
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