- Eastern Orthodox Church, Glen Cove
- Eating Disorder Treatment & Information Centers, Glen Cove
- Education, Glen Cove
- Educational Consultants, Glen Cove
- Educational Consultants, Glen Cove
- Educational, Philanthropic & Research Foundations, Glen Cove
- Educators, Glen Cove
- Electric Companies, Glen Cove
- Electrical Control Systems & Materials, Glen Cove
- Electrical Supplies, Parts & Equipment, Glen Cove - Wholesale & Manufacturers
- Electricians, Glen Cove - Electrical Contractors
- Electronic & Monitoring Equipment, Glen Cove
- Electronics Components, Glen Cove
- Electronics Manufacturers, Glen Cove
- Electronics Repair & Maintenance , Glen Cove
- Electronics Stores, Glen Cove
- Elementary Schools, Glen Cove
- Emergency Services, Glen Cove
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- Employment Agencies, Glen Cove - Staffing Agencies
- Employment Agencies General Labor, Glen Cove
- Engineer & Architect Services, Glen Cove - Engineering & Architecture Service
- Engineering Consultants, Glen Cove - Consulting Engineers
- Engineers Machine Tools Design, Glen Cove
- Engravers & Typesetting Printers, Glen Cove
- Entertainment & Recreation, Glen Cove
- Entertainment Consultants, Glen Cove
- Environmental Products, Glen Cove
- Environmental Products & Services, Glen Cove
- Estate And Property Attorneys & Lawyers, Glen Cove
- Estate And Property Attorneys & Lawyers, Glen Cove
- Estate And Property Lawyers & Attorneys, Glen Cove
- European Cuisine, Glen Cove
- Excavation Contractors, Glen Cove - Excavating - Excavator Companies
- Exercise Equipment Stores, Glen Cove - Fitness & Gym Equipment
- Exporters, Glen Cove
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