- Eastern Orthodox Church, Johnstown
- Economic Development, Johnstown
- Economic Development, Analysis & Research, Johnstown
- Education, Johnstown
- Education & Information Services, Johnstown
- Education Associations & Organizations, Johnstown
- Education Services, Johnstown
- Education Technology, Johnstown
- Educational & School Supplies & Equipment, Johnstown - Classroom & Teacher Supply Stores
- Educational Consultants, Johnstown
- Educational Consultants, Johnstown
- Educational Facilities, Johnstown
- Educational Financing, Johnstown
- Educational Testing Services, Johnstown
- Educational, Philanthropic & Research Foundations, Johnstown
- Educators, Johnstown
- Electric Companies, Johnstown
- Electric Motor Repair & Service, Johnstown
- Electric Motors & Generators , Johnstown
- Electrical Control Systems & Materials, Johnstown
- Electrical Engineer, Johnstown
- Electrical Inspection Service, Johnstown
- Electrical Supplies, Parts & Equipment, Johnstown - Wholesale & Manufacturers
- Electricians, Johnstown - Electrical Contractors
- Electrolysis Treatments, Johnstown
- Electronic Repair Shops , Johnstown
- Electronic, Communications & Electrical Engineers, Johnstown
- Electronics Repair & Maintenance , Johnstown
- Electronics Stores, Johnstown
- Elementary Schools, Johnstown
- Elevator & Escalators Sales, Repair & Service, Johnstown
- Embossing, Stamping & Engraving, Johnstown
- Embroidery, Johnstown
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- Embroidery & Needlework Materials & Supplies Retail, Johnstown
- Emergency Disaster Planning, Johnstown
- Emergency Medical Identification, Johnstown
- Emergency Rooms, Johnstown - Urgent Care Centers
- Emergency Services, Johnstown
- Employment Agencies, Johnstown - Staffing Agencies
- Employment And Labor Relations Attorneys & Lawyers, Johnstown
- Employment Assistance, Johnstown
- Employment Consultants Placement Business, Johnstown
- Endodontists, Johnstown - Root Canal Specialist
- Energy & Conservation Agencies, Johnstown
- Energy Brokers, Johnstown
- Engine Parts & Equipment, Johnstown
- Engine Rebuild, Repair & Exchange, Johnstown
- Engineer & Architect Services, Johnstown - Engineering & Architecture Service
- Engineering Consultants, Johnstown - Consulting Engineers
- Engineers Industrial, Johnstown
- Engraving & Platemaking, Johnstown
- Engraving - Wood, Plastic, Jewelry, Etc, Johnstown - Engraver
- Entertainment & Recreation, Johnstown
- Entertainment Equipment & Supplies, Johnstown
- Environmental Consultants, Johnstown - Ecological Consulting
- Environmental Engineers, Johnstown
- Episcopal Churches, Johnstown
- Estate And Property Attorneys & Lawyers, Johnstown
- Estate And Property Attorneys & Lawyers, Johnstown
- Estate And Property Lawyers & Attorneys, Johnstown
- Ethnic Churches, Johnstown
- European Cuisine, Johnstown
- Excavation Contractors, Johnstown - Excavating - Excavator Companies
- Executive Suites & Offices For Rent, Johnstown
- Exercise Equipment Stores, Johnstown - Fitness & Gym Equipment
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