| Relationships | Role | Relationship Start | Relationship End |
| Commercial Landmark Corporation | Parent | 8/31/1984 | 9/17/1993 |
| First Tahlequah Corp. | Parent | 12/31/1981 | 8/30/1984 |
| First Tahlequah Corp. | Parent | 2/18/1980 | 12/30/1981 |
| First Bank & Trust Co. Of Fort Gibson | Subsidary | 11/26/1980 | 8/30/1984 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Boatmen's National Bank Of Oklahoma | Buyer | 4,092,924 | Discontinued | 9/18/1993 |