By A Mystery Man Writer
Feasibility Study - Oregon National Historic Trail (U.S. National
Route of the Oregon Trail - Wikipedia
Oregon Trail - Wikipedia
The Trek West - Trail Basics - History of the Oregon/California
Local Trail Landmarks located near the Oregon/California Trail Center
Historical Trails - The Oregon/California Trail History and Map
Park Archives: California National Historic Trail
Oregon Trail, Definition, History, Map, & Facts
Elizabeth Sager: Pioneer of the Oregon Trail
Oregon and California National Historic Trails Summer 2023