- Eastern Orthodox Church, Somerville
- Education, Somerville
- Education & Information Services, Somerville
- Educational Consultants, Somerville
- Educational Consultants, Somerville
- Educational Facilities, Somerville
- Educational Research, Somerville
- Educational, Philanthropic & Research Foundations, Somerville
- Educators, Somerville
- Electric Companies, Somerville
- Electrical Control Systems & Materials, Somerville
- Electrical Goods, Somerville
- Electrical Supplies, Parts & Equipment, Somerville - Wholesale & Manufacturers
- Electricians, Somerville - Electrical Contractors
- Electrolysis Treatments, Somerville
- Electronics Repair & Maintenance , Somerville
- Electronics Stores, Somerville
- Elementary Schools, Somerville
- Embroidery Manufacturers, Somerville
- Emergency Services, Somerville
- Emergency Victim Services, Somerville
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- Employment & Recruiting Consultants, Somerville - Executive Search Consultants
- Employment Agencies, Somerville - Staffing Agencies
- Employment Agencies Teachers, Somerville
- Employment Assistance, Somerville
- Energy Conservation Consultants, Somerville
- Engine Rebuild, Repair & Exchange, Somerville
- Engineer & Architect Services, Somerville - Engineering & Architecture Service
- Engineering Consultants, Somerville - Consulting Engineers
- Engineers Product Development, Somerville
- Entertainers & Groups, Somerville
- Entertainment & Recreation, Somerville
- Entertainment Consultants, Somerville
- Environmental Groups, Somerville
- Environmental Products, Somerville
- Environmental Products & Services, Somerville
- Episcopal Churches, Somerville
- Equipment Installation Contractors, Somerville
- Ethnic Restaurants, Somerville
- European Cuisine, Somerville
- Evangelical Church, Somerville
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