- Race Track Equipment & Supplies, Pottstown
- Racing Car Supplies, Pottstown
- Radiator Repair, Pottstown - Gas Tank Repair
- Radio Communications Equipment & Systems , Pottstown
- Radio Stations & Broadcasting Companies, Pottstown
- Radiologists, Pottstown - Radiology Doctors, Physicians & Surgeons
- Radiotelephone Communications, Pottstown
- Radon Testing & Services, Pottstown
- Ready Mix Concrete, Pottstown - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Pottstown
- Real Estate, Pottstown - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Pottstown
- Real Estate Agent - Property Lessors, Pottstown
- Real Estate Appraiser, Pottstown - Appraisal Services
- Real Estate Appraisers & Consulting Services, Pottstown
- Real Estate Attorneys & Lawyers, Pottstown
- Real Estate Attorneys & Lawyers, Pottstown
- Real Estate Broker, Pottstown
- Real Estate Consultants, Pottstown
- Real Estate Developers, Pottstown
- Real Estate Lawyers & Attorneys, Pottstown
- Real Estate Listings Services, Pottstown
- Real Estate Management, Pottstown
- Real Estate Rentals, Pottstown
- Real Estate Services, Pottstown
- Record Storage, Destruction & Management, Pottstown
- Records, Tapes, CDs - Used & Vintage, Pottstown
- Recreational Equipment & Supplies Companies, Pottstown
- Recycling Drop-Off Centers, Pottstown
- Recycling Scrap & Waste Materials, Pottstown - Scrap Metal, etc
- Reducing Exercise & Weight Control Services, Pottstown
- Reformed Churches, Pottstown
- Refractory Systems & Materials, Pottstown
- Refrigeration & Cooling Equipment, Parts & Supplies , Pottstown - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, Pottstown - Ac, Freezer, Refrigerator Repair
- Refrigerator Sales, Service & Repair, Pottstown - Fridge
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- Rehabilitation Centers, Products & Services, Pottstown
- Rehabilitation Specialists, Pottstown
- Rehabilitational Job Training Services, Pottstown
- Religious Education, Pottstown
- Religious Organizations, Pottstown
- Religious Practitioners, Pottstown
- Rental & Leasing Business Equipment, Pottstown
- Repair Services, Pottstown
- Research & Development Bureaus, Pottstown - Commercial, Economic, Sociological & Educational Research
- Research & Development Labs, Pottstown - Laboratories
- Research Service Libraries, Pottstown
- Research Services, Pottstown
- Residential, Pottstown
- Residential Apartments, Pottstown
- Residential Care Facilities, Pottstown
- Residential Construction Contractors, Pottstown - General Contractors
- Restaurant Lobster, Pottstown
- Restaurant Management & Consulting, Pottstown - Food Facilities Consultants
- Restaurants/Food & Dining, Pottstown
- Retail Book Stores, Pottstown
- Retaining Wall Contractors, Pottstown - Build & Repair - Blocks, Concrete, Stones, etc
- Retirement & Estate Planning, Pottstown
- Retirement Communities & Home, Assisted Living & Apartments, Pottstown
- Retirement Planning Consultants & Services, Pottstown
- Riding & Rodeo Services, Pottstown
- Riding Equipment, Pottstown
- Rigging Service & Crane Hoisting, Pottstown
- Road Construction, Pottstown - Companies & Contractors
- Road Construction & Repair Contractors, Pottstown
- Roadside Assistance, Road Service & Towing Service, Pottstown
- Rodeo & Equestrian Equipment & Supplies, Pottstown
- Roofing Consultants, Pottstown - Roofing Companies
- Roofing Contractors, Pottstown - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Pottstown
- Rooming & Boarding Houses, Pottstown
- Rv Parks, Pottstown
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