1811: Astoria founded by John Jacob Astor
18--: Treaty gave joint control of Oregon Territory to U.S. and Nez Perce Indians
1846: Oregon Treaty - Great Britain gave up claims to region
1847-1848: Cayuse Indian War
1851-1853 & 1856: Rogue River Indian war
1854: Oregon Indian War
1855: Klamath and Solmon river Indian War
1865-1868: Indian Campaign
1872-1873: Modoc Indian War
1878: Birch Creek
Most archives, historical societies, and genealogical societies have special collections and indexes of genealogical value. These must usually be searched in person.
A notable genealogical collection is the Daughters of the American Revolution (DAR) Collection. This collection consists of transcripts of Bible, cemetery, church, marriage, death, obituary, and will records. It was microfilmed in 1971 at the DAR Library in Washington, D.C., and is available on 33 reels at the Family History Library (beginning on FHL film 857012). The volumes are generally arranged by county, and many have individual indexes.
There are many internet articles on the history of Oregon on the internet. To find some of them use a search engine with the terms Oregon and History.