| Allstate | American States |
| Austin Mutual | Bjornson General |
| Colonial Life & Acc. | Employers Mutual |
| Farmers Alliance | Firemans Fund |
| Generali | Lincoln Benefit life |
| Mutual of Omaha | Northwestern National |
| Phico | The Principal Financial Group |
| Rocky Mountain | Safeco |
| St. Paul | State Fund (W.C.) |
| Transwestern General | Trinity |
| USF&G | Valor Ins. Co. (W.C.) |