Oregon Trail · Applegate Trail · Meek Cutoff · Whitman Mission Route · Barlow Road · Klamath Trail · Free Emigrant Road · Upper Columbia River Route · Nez Perce Trail · Lewis and Clark Trail · Santiam Wagon Road · Willamette Valley · Great Northern Railway (U.S.) · Union Pacific Railroad · Northern Pacific Railway · Oregon Short Line Railroad · Oregon Railroad and Navigation Company · Southern Pacific