| Relationships | Role | Relationship Start | Relationship End |
| West Suburban Investments, Inc. | Parent | 1/20/1984 | 12/30/2004 |
| Forest Creek Venture | Subsidary | 1/20/1984 | 10/31/1985 |
| Relationships | Role | Relationship Start | Relationship End |
| West Suburban Investments, Inc. | Parent | 1/20/1984 | 12/30/2004 |
| Forest Creek Venture | Subsidary | 1/20/1984 | 10/31/1985 |