- AIG
- American European
- Andover Companies
- Chubb
- Cumberland Insurance Group
- Electric Ins.
- Encompass
- Foremost
- Franklin Mutual
- Hartford
- Liberty Mutual
- Mercer Grp.
- MetLife
- Penn Natl.
- Philadelphia
- Plymouth Rock Assurance
- Progressive
- Safeco
- SBLI
- The Philadelphia Contributionship
- Travelers
- Zurich