Witkin Scott Associates, Inc.
- American Collectors Insurance
- American Modern Insurance Group
- AmTrust
- Applied Underwriters
- Chubb
- CNA
- CNA Surety
- Dryden Mutual Insurance
- Erie & Niagara Insurance Association
- Hartford
- Infinity
- Kemper
- Main Street America
- Markel
- Merchants Insurance Group
- NY Mutual Undwrs.
- NYCM
- Philadelphia
- Progressive
- RLI Corp.
- Security Mutual
- Selective
- ShelterPoint
- Sirius America
- Sterling
- Travelers
- Utica National Insurance Group
- Harris B. Witkin, CIC, President