- American Collectors Insurance
- American Modern Insurance Group
- Bristol West
- Burns & Wilcox
- Chubb
- CNA Surety
- Dairyland
- Federated Natl.
- Foremost
- Germania
- Hartford
- Hull & Co.
- Insurors Indemnity
- Merchants Insurance Group
- Mercury
- National Lloyds
- Progressive
- RLI Corp.
- Safeco
- Texas FAIR Plan
- Texas Mut.
- Tower Hill
- Travelers
- Zurich