- Railroad, Highland Park - Commuter & Passenger Transport
- Railroad Companies, Highland Park
- Reading Instruction Schools, Highland Park
- Ready Mix Concrete, Highland Park - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Highland Park
- Real Estate, Highland Park - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Highland Park
- Real Estate Agent - Property Lessors, Highland Park
- Real Estate Appraiser, Highland Park - Appraisal Services
- Real Estate Appraisers & Consulting Services, Highland Park
- Real Estate Broker, Highland Park
- Real Estate Consultants, Highland Park
- Real Estate Developers, Highland Park
- Real Estate Management, Highland Park
- Real Estate Rentals, Highland Park
- Real Estate Services, Highland Park
- Recording Studio - Equipment & Rental, Highland Park
- Records, Tapes, CDs - Used & Vintage, Highland Park
- Recreation Management Services, Highland Park
- Recreational Equipment & Supplies Companies, Highland Park
- Recreational Services, Highland Park
- Recycling Drop-Off Centers, Highland Park
- Recycling Scrap & Waste Materials, Highland Park - Scrap Metal, etc
- Reducing Exercise & Weight Control Services, Highland Park
- Reform Synagogues, Highland Park
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- Refrigeration & Cooling Equipment, Parts & Supplies , Highland Park - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, Highland Park - Ac, Freezer, Refrigerator Repair
- Rehabilitation Centers, Products & Services, Highland Park
- Rehabilitation Specialists, Highland Park
- Religious Organizations, Highland Park
- Repair Services, Highland Park
- Research & Development Bureaus, Highland Park - Commercial, Economic, Sociological & Educational Research
- Research Services, Highland Park
- Residential, Highland Park
- Residential Apartments, Highland Park
- Residential Architect, Highland Park
- Residential Care Facilities, Highland Park
- Residential Construction Contractors, Highland Park - General Contractors
- Residential Electricians, Highland Park - Electric Contractors
- Resorts & Hotels, Highland Park
- Restaurants/Food & Dining, Highland Park
- Retail Book Stores, Highland Park
- Retirement Communities & Home, Assisted Living & Apartments, Highland Park
- Retirement Homes, Highland Park
- Riding Apparel & Equipment, Highland Park
- Roadside Assistance, Road Service & Towing Service, Highland Park
- Roofing Consultants, Highland Park - Roofing Companies
- Roofing Contractors, Highland Park - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Rubber Products - Retail, Highland Park
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