Transportation and Communication
- Adams
- Amity
- Applegate Trail
- Arlington
- As It Was (Jefferson Public Radio)
- Ashland
- Athena
- Auburn
- Ralph Barnes (1899-1940)
- Norman Best (1906-1995)
- Carson Helicopters
- Civil War, Newspaper Suppression
- Columbia River Highway
- Critical Mass in Portland
- Culver
- Cycle Oregon
- Thomas Jefferson Dryer (1808–1879)
- Echo
- Federal Writers' Project in Oregon
- Forest Service Radio Lab
- Gazelle disaster
- James J. Hill (1838-1916)
- William A. Hilliard (1927-)
- Intel
- Glenn Jackson (1902-1980)
- Jefferson Public Radio
- KBOO Community Radio
- Lorane (town)
- McKenzie River
- Mt. Hood Freeway
- Oregon Pony
- Oregon Spectator
- Oregon Statesman
- The Oregonian
- Oshu Nippo
- Henry Lewis Pittock (1836-1919)
- Port of Portland
- Portland Bridge Pedal
- Portland Seamen's Friend Society
- Robert Ruhl (1880-1967)
- Harvey Scott (1838-1910)
- John Shively (1804-1893)
- Ernst Skarstedt (1857-1929)
- Charles Sprague (1887-1969)
- Isaac Ingalls Stevens (1818-1862)
- Tucker Sno-Cat®
- U.S. Army Corps of Engineers
- United Bicycle Institute
- Willamette River
