View Descending the Grand Round Foot of the Blue Mountain.

An illustration from Expedition to Oregon, 1849. Courtesy Oreg. Hist. Soc. Research Library, OrHi84282 Courtesy Oreg. Hist. Soc. Research Library, OrHi84282

Fort Laramie, Wyoming, Oregon Trail.

The federal government transformed some fur trading posts into military forts to protect wagon trains, despite the low occurrence of conflict with Native Americans. Fort Laramie was one of those military posts. Courtesy Oreg. Hist. Soc. Research Library, OrHi85429 Courtesy Oreg. Hist. Soc. Research Library, OrHi85429

Illustration of Oregon Trail wagon train.

Illustration of Oregon Trail wagon train, by unknown artist Courtesy Oreg. Hist. Soc. Research Library, 58569

Illustration of wagons navigating the Columbia River.

From Oregon's Golden Years, by A. Burr. Courtesy Oreg. Hist. Soc. Research Library, OrHi86985 Courtesy Oreg. Hist. Soc. Research Library, OrHi86985

Old Way Across the Plains, 1873..

Sketch by J.H. Beadle of a wagon train crossing a river. Courtesy Oreg. Hist. Soc. Research Library, OrHi88286 Courtesy Oreg. Hist. Soc. Research Library, OrHi88286

Indians Chasing Buffalo, Scott's Bluffs, 1853.

Illustration depicting the Native Americans pioneers encountered along the trail. Scott's Bluffs is in Nebraska. Artist was George H. Baker, and his drawings appeared in Crossing the Plains, by J.M. Hutchings. Courtesy Oreg. Hist. Soc. Research Library, OrHi98912 Courtesy Oreg. Hist. Soc. Research Library, OrHi98912