| Answer | Crossword Clue |
|---|---|
| OSAGE | Major tributary of the Missouri |
| PLATTE | Tributary of the Missouri |
| PLATTE | Tributary of the Missouri. |
| OSAGE | Tributary of the Missouri |
| OSAGE | Tributary of the Missouri. |
| OSAGE | Tributary of the Missouri River |
| OSAGE | A tributary of the Missouri |
| OSAGE | Largest tributary of the Missouri |
| OSAGE | 500-mile tributary of the Missouri. |
