The Cayuse War (1847-1855), the Rogue River War (ca. 1855-1857) and the Yakima War (1856-1858) all resulted in losses for the Oregon and Washington Indians. Many tribal members succumbed to either military attack or disease, and most of the remaining population were sent to live on reservations. Additionally, a great deal of tribal land was taken by the U.S. government in the aftermath of these wars. The Cayuse, Yakima and Rogue River Wars Papers include letters, official reports, general orders, petitions, and miscellaneous papers relating to Indian wars in Oregon and Washington. Among the correspondents are: George Abernethy, Jesse Applegate, William Craig, Alanson Hinman, Berryman Jennings, H. J. G. Maxon, Robert Newell, Joel Palmer, John Mix Stanley, Elkanah Walker, and Ralph Wilcox.
Papers include correspondence (1848-1875) received during Lane's service as Oregon's delegate to Congress; territorial proclamations (1847-1849); copy letters written by Lane (1848-1861); photocopy of report (1849) to the U.S. secretary of war concerning the customs and locations of various Indian tribes in the Oregon Territory; mailing lists (1848-1859) of Lane's constituents when he held public office; survey of Lane's donation land claim; orders, reports, and requisitions created while Lane served in the Mexican War; documents (1849-1851) related to the Rogue River Indian wars and Whitman Massacre.