For nearly twenty years, Oregon has been the home to Carson Helicopters, Inc., which operates a fleet of heavy-lift helicopters from its headquarters in Grants …

Oregon Encyclopedia

The cartographic history of Oregon as a place in the Pacific Northwest began long before European visitation to the region. Mapmakers initially conceptualized the presence …

Oregon Encyclopedia

A massive ground movement known as the Bonneville Landslide, which occurred about 1200 AD, briefly blocked the Columbia River. The river subsequently broke through …

Oregon Encyclopedia

The Cascade mountain system extends from northern California to central British Columbia. In Oregon, it comprises the Cascade Range, which is 260 miles long and, …

Oregon Encyclopedia

“With towering fir forests, sunlit oak groves, wildflower-strewn meadows, and steep canyons, the Cascade–Siskiyou National Monument is an ecological wonder,” President Bill Clinton wrote in …

Oregon Encyclopedia

Cascadia Cave, near the South Santiam River, is one of the most significant cultural resources of the Indigenous peoples of the Cascade Mountains and the …

Oregon Encyclopedia

Charles Axel Smith became, for a time, one of Oregon's most powerful lumbermen, buying up huge tracts of forest land and developing the largest mill …

Oregon Encyclopedia

Portland is home to the second largest collection of cast iron architecture in the United States, just behind New York City’s historic Soho District. Cast …

Oregon Encyclopedia

Cathlapotle is the archaeological site of a major Chinookan town located in the Portland-Vancouver metropolitan area, at the place where Lake River, Gee Creek, …

Oregon Encyclopedia

Catholic Charities of Oregon, a member agency of the Catholic Charities Network, describes its work as “partnering with the most vulnerable, regardless of faith, to …

Oregon Encyclopedia