gov. john campbell

In the spring of 1878, about 950 Northern Arapaho people arrived with a military escort on the Eastern Shoshone Reservation in the Wind River Valley in central Wyoming Territory. The two tribes had been in open warfare as recently as four years before, and bad feelings lingered between them.

In the 1860s, the Eastern Shoshone people signed two treaties with the U.S. government. The first set aside vast holdings for them. Just five years later, as the transcontinental railroad was approaching, a second treaty established a Shoshone reservation in the Wind River valley—with less than a tenth the earlier amount of land.