- Berkley Mid-Atlantic Group
- Berkshire Hathaway GUARD
- CNA
- Cumberland Insurance Group
- Donegal
- Eastern Alliance
- EMC
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- Foremost
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- Hartford
- Kemper
- Keystone
- Liberty Mutual
- Lititz Mutual
- Merchants Insurance Group
- National General
- Nationwide
- Ohio Casualty
- Penn Natl.
- Philadelphia
- Plymouth Rock Assurance
- Progressive
- Rockwood Casualty
- Safeco
- Travelers
- Westfield Insurance