- Race Car Dealers, Allentown
- Racing Car Supplies, Allentown
- Racing Fuels, Allentown
- Racing Including Track Operations, Allentown
- Radiator Coolant & Solvents, Allentown - Engine Coolant
- Radiator Repair, Allentown - Gas Tank Repair
- Radio & Television Repair Shops , Allentown - TV Repair
- Radio Communications Equipment & Systems , Allentown
- Radio Equipment & Parts Stores & Dealers, Allentown
- Radio Stations & Broadcasting Companies, Allentown
- Radioactivity Detection Devices, Allentown
- Radiologists, Allentown - Radiology Doctors, Physicians & Surgeons
- Radiotelephone Communications, Allentown
- Radon Testing & Services, Allentown
- Railroad, Allentown - Commuter & Passenger Transport
- Railroad & Subway Construction Contractors, Allentown
- Railroad Companies, Allentown
- Railroad Contractors, Allentown
- Reading Instruction Schools, Allentown
- Ready Mix Concrete, Allentown - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Allentown
- Real Estate, Allentown - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Allentown
- Real Estate Agent - Property Lessors, Allentown
- Real Estate Appraiser, Allentown - Appraisal Services
- Real Estate Appraisers & Consulting Services, Allentown
- Real Estate Attorneys & Lawyers, Allentown
- Real Estate Auctioneers, Allentown
- Real Estate Broker, Allentown
- Real Estate Consultants, Allentown
- Real Estate Developers, Allentown
- Real Estate Management, Allentown
- Real Estate Rentals, Allentown
- Real Estate Services, Allentown
- Real Estate Services Franchises, Allentown
- Record Labels, Allentown - Record Companies
- Record Storage, Destruction & Management, Allentown
- Recording Studio - Equipment & Rental, Allentown
- Records, Tapes, CDs - Used & Vintage, Allentown
- Recreational Equipment & Supplies Companies, Allentown
- Recreational Equipment Repair & Service, Allentown
- Recreational Organizations, Allentown
- Recycling Drop-Off Centers, Allentown
- Recycling Scrap & Waste Materials, Allentown - Scrap Metal, etc
- Red Wing Shoes, Allentown
- Reducing Exercise & Weight Control Services, Allentown
- Reform Synagogues, Allentown
- Refrigerated Storage & Warehouse, Allentown - Warehousing
- Refrigeration & Air Conditioning Contractors, Allentown - Installation, Repair, Sales & Service
- Refrigeration & Cooling Equipment, Parts & Supplies , Allentown - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, Allentown - Ac, Freezer, Refrigerator Repair
- Refrigerator & Freezer Equipment, Parts & Supplies, Allentown
- Refrigerator Sales, Service & Repair, Allentown - Fridge
- Refuse Collection & Disposal, Allentown
- Refuse Systems & Garbage Disposal, Allentown
- Rehabilitation Centers, Allentown
- Rehabilitation Centers, Products & Services, Allentown
- Rehabilitation Specialists, Allentown
- Rehabilitational Job Training Services, Allentown
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- Religious Education, Allentown
- Religious Goods & Church Supplies Stores, Allentown
- Religious Organizations, Allentown
- Religious Practitioners, Allentown
- Rental & Leasing Business Equipment, Allentown
- Repair Services, Allentown
- Research & Development Bureaus, Allentown - Commercial, Economic, Sociological & Educational Research
- Research & Development Labs, Allentown - Laboratories
- Research Services, Allentown
- Residential, Allentown
- Residential Apartments, Allentown
- Residential Architect, Allentown
- Residential Care Facilities, Allentown
- Residential Construction Contractors, Allentown - General Contractors
- Residential Electricians, Allentown - Electric Contractors
- Residential Real Estate - Rental & Leasing, Allentown
- Resorts & Hotels, Allentown
- Resorts Time Share, Allentown
- Respiratory Medical Services, Allentown
- Respiratory Therapy, Allentown
- Restaurant & Food Service Management Services, Allentown
- Restaurant & Lounge, Bar, Or Pub, Allentown
- Restaurant Equipment, Allentown
- Restaurant Equipment & Supplies, Allentown
- Restaurant Equipment Cleaning, Allentown - Restaurant Cleaners
- Restaurant Equipment Repair & Service, Allentown - Bakery, Beverage, Food & Soda Fountain Equipment
- Restaurant Management & Consulting, Allentown - Food Facilities Consultants
- Restaurant Supplies & Equipment, Allentown
- Restaurants - Breakfast Brunch Lunch, Allentown
- Restaurants/Food & Dining, Allentown
- Resume Service, Allentown
- Retail Book Stores, Allentown
- Retaining Wall Contractors, Allentown - Build & Repair - Blocks, Concrete, Stones, etc
- Retirement & Estate Planning, Allentown
- Retirement Communities & Home, Assisted Living & Apartments, Allentown
- Retirement Communities & Homes, Allentown
- Retirement Planning Consultants & Services, Allentown
- Rheumatologists, Allentown - Rheumatology Doctors, Physicians & Surgeons
- Rice Products, Allentown
- Riding & Rodeo Services, Allentown
- Riding Apparel & Equipment, Allentown
- Rigging Equipment & Supplies, Allentown
- Rigging Service & Crane Hoisting, Allentown
- Risk Management Consultants, Allentown
- Road Construction, Allentown - Companies & Contractors
- Road Construction Equipment & Machinery, Allentown
- Road Treatment & Dust Control, Allentown
- Roadside Assistance, Road Service & Towing Service, Allentown
- Roofing Consultants, Allentown - Roofing Companies
- Roofing Contractors, Allentown - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Allentown
- Rooming & Boarding Houses, Allentown
- Rubber Products - Retail, Allentown
- RV & Campers Repair & Service, Allentown
- RV Parts, Accessories & Equipment, Allentown - ATV & Recreation Vehicles
- RV Repair, Allentown - Recreational Vehicle
- RV Repair & Service, Allentown - ATV & Recreation Vehicles
- Ryder Truck Rental , Allentown - Ryder Moving
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