| 11. | While stationed at the ethnographic monograph of the Hidatsa.
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| 12. | There is some evidence that Matthews married a Hidatsa woman during this time.
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| 13. | The middle Missouri tradition includes elements of the Mandan, Hidatsa and Crow.
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| 14. | The Crow, Hidatsa, Cheyenne, who also stole horses from their enemies.
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| 15. | These included the Arikara, Hidatsa, Yankton.
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| 16. | They banded together with the Hidatsa to survive.
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| 17. | Today about 30 full-blood Hidatsa are members of the Affiliated Three Tribes.
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| 18. | The Hidatsa hunted upstream from the earthlodge villages at and below the Knife River.
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| 19. | The Hidatsa tribe was one party in the Treaty of Fort Laramie, 1851.
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| 20. | The Arikara joined old foes the Sioux in raids on Mandan and Hidatsa Indians.
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