Oregon pioneer history (1806–1890) is the period in the history of Oregon Country and Oregon Territory, in the present day state of Oregon and Northwestern...

The history of Oregon, a U.S. state, may be considered in five eras: geologic history, inhabitation by native peoples, early exploration by Europeans...

United States that connected the Missouri River to valleys in Oregon Territory. The eastern part of the Oregon Trail spanned part of what is now the state...

of the territory was admitted to the Union as the State of Oregon. Originally claimed by several countries (see Oregon Country), Spanish "El Orejón" was...

The treaty brought an end to the Oregon boundary dispute by settling competing American and British claims to the Oregon Country; the area had been jointly...

Oregon City is the county seat of Clackamas County, Oregon, United States, located on the Willamette River near the southern limits of the Portland metropolitan...

Oregon (/ˈɒrɪɡən, -ɡɒn/ ORR-ih-ghən, -⁠gon) is a state in the Pacific Northwest region of the United States. Oregon is a part of the Western United States...

Astoria is a port city and the seat of Clatsop County, Oregon, United States. Founded in 1811, Astoria is the oldest city in the state and was the first...

a timeline of the history of Oregon in the United States of America. 13,200 BCE - Earliest evidence of human habitation in Oregon, discovered in 1938...

The historic 2,170-mile (3,490 km) Oregon Trail connected various towns along the Missouri River to Oregon's Willamette Valley. It was used during the...