- Race Track Equipment & Supplies, Yorktown
- Racing Car Supplies, Yorktown
- Radiator Coolant & Solvents, Yorktown - Engine Coolant
- Radio & Television Repair Shops , Yorktown - TV Repair
- Radio Communications Equipment & Systems , Yorktown
- Radio Stations & Broadcasting Companies, Yorktown
- Radiotelephone Communications, Yorktown
- Real Estate, Yorktown - Agent, Broker & Companies
- Real Estate Agent - Property Lessors, Yorktown
- Real Estate Appraiser, Yorktown - Appraisal Services
- Real Estate Appraisers & Consulting Services, Yorktown
- Real Estate Attorneys & Lawyers, Yorktown
- Real Estate Consultants, Yorktown
- Real Estate Developers, Yorktown
- Real Estate Lawyers & Attorneys, Yorktown
- Real Estate Management, Yorktown
- Real Estate Services, Yorktown
- Record Storage, Destruction & Management, Yorktown
- Recreational Equipment & Supplies Companies, Yorktown
- Recreational Services, Yorktown
- Recycling Drop-Off Centers, Yorktown
- Recycling Scrap & Waste Materials, Yorktown - Scrap Metal, etc
- Refrigeration & Air Conditioning Contractors, Yorktown - Installation, Repair, Sales & Service
- Rehabilitation Centers, Products & Services, Yorktown
- Rehabilitation Specialists, Yorktown
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- Religious Education, Yorktown
- Religious Organizations, Yorktown
- Religious Practitioners, Yorktown
- Rental Property Management, Yorktown
- Repair Services, Yorktown
- Research & Development Bureaus, Yorktown - Commercial, Economic, Sociological & Educational Research
- Research & Development Labs, Yorktown - Laboratories
- Research Services, Yorktown
- Residential, Yorktown
- Residential Apartments, Yorktown
- Residential Construction Contractors, Yorktown - General Contractors
- Resorts & Hotels, Yorktown
- Restaurant & Food Service Management Services, Yorktown
- Restaurants/Food & Dining, Yorktown
- Restoration Contractors, Yorktown
- Resume Service, Yorktown
- Riding & Rodeo Services, Yorktown
- Riding Apparel & Equipment, Yorktown
- Rodeo & Equestrian Equipment & Supplies, Yorktown
- Roof Repair, Yorktown - Roofing Repair Services
- Roofing Consultants, Yorktown - Roofing Companies
- Roofing Contractors, Yorktown - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- RV & Campers Repair & Service, Yorktown
- RV Repair, Yorktown - Recreational Vehicle
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