Related Clues:
- Missouri's ally, once
- Missouri River tribe
- Missouri River tributary
- Lake of the Ozarks river
- Ally of the Missouri
- River spanned by the Bagnell Dam
- Largest tributary of the Missouri
- Siouan tongue
- Relatives of the Omaha
- River named for an Indian tribe
- Siouan
- Oil-rich Indians
- Platte River people
- Sioux speaker
- Language from which 'Nebraska' comes