- Ear & Body Piercing, Lockport
- Education, Lockport
- Education & Information Services, Lockport
- Educational Consultants, Lockport
- Educational, Philanthropic & Research Foundations, Lockport
- Educators, Lockport
- Electric Companies, Lockport
- Electric Motor Manufacturers, Lockport
- Electric Motors & Generators , Lockport
- Electrical Control Systems & Materials, Lockport
- Electrical Heating Systems, Lockport
- Electricians, Lockport - Electrical Contractors
- Electronics Manufacturers, Lockport
- Electronics Repair & Maintenance , Lockport
- Electronics Stores, Lockport
- Elementary Schools, Lockport
- Elevator & Escalators Sales, Repair & Service, Lockport
- Embossing, Stamping & Engraving, Lockport
- Emergency Services, Lockport
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- Emergency Victim Services, Lockport
- Employment Agencies, Lockport - Staffing Agencies
- Employment And Labor Relations Attorneys & Lawyers, Lockport
- Energy & Conservation Agencies, Lockport
- Energy Services, Lockport
- Engine Rebuild, Repair & Exchange, Lockport
- Engineer & Architect Services, Lockport - Engineering & Architecture Service
- Engineering Consultants, Lockport - Consulting Engineers
- Entertainment & Recreation, Lockport
- Entertainment Consultants, Lockport
- Environmental Conservation & Ecological Services, Lockport - Ecosystem Services
- Environmental Contractors, Lockport - Environmental Companies
- Environmental Products, Lockport
- Environmental Products & Services, Lockport
- Environmental Services, Lockport
- Episcopal Churches, Lockport
- European Cuisine, Lockport
- Excavation Contractors, Lockport - Excavating - Excavator Companies
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