1855 Treaty
(click on image for full text facsimile)

1858 Treaty of Friendship

1861 Unratified Treaty

1863 Treaty

1868 Treaty

1873 Executive Order Creating Wallowa Valley Reserve

1875 Executive Order Revoking Wallowa Valley Reserve

1893 Allotment Act

Facsimile of treaty from U.S. Senate. Committee on
Indian Affairs: Laws and Treaties, Vol 2 (Treaties)
compiled and edited by Charles J. Kappler [2nd edition].  Washington: Government Printing Office, 1904
(Y4.In2/2:L44/2). pp 702 - 706.

These documents form the legal relationship with the U.S. government and the Nez Perce people, not only beginning with the first treaty in 1855, but today, for the treaties still dictate how the federal and state governments interact with the Nez Perce tribe.