| Relationships | Role | Relationship Start | Relationship End |
| Cullen/Frost Bankers, Inc. | Parent | 5/1/1974 | 5/18/1989 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Frost Bank | Buyer | 29,633,441 | Discontinued | 5/19/1989 |
| Relationships | Role | Relationship Start | Relationship End |
| Cullen/Frost Bankers, Inc. | Parent | 5/1/1974 | 5/18/1989 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Frost Bank | Buyer | 29,633,441 | Discontinued | 5/19/1989 |