Following the path of Lewis and Clark’s 1804-1806 expedition and preparatory trips, the trail runs from Pittsburgh to the mouth of the Columbia River in Oregon.

From 1804-1806, Meriwether Lewis and William Clark led the "Corps of Discovery" on a journey to the Pacific Ocean to map out the newly acquired Louisiana Territory.

They prepared over 140 maps that noted landmarks, friendly versus “hostile” Native Americans, water sources, and Indian trails. These maps greatly aided future explorers and settlers, including ...

Camps are what archeologists find. They may be 10,000 years old, they may be 200 years old. The 10,000-year-olds didn’t leave maps or journals; Lewis and Clark did,” Karsmizki said.

A long-missing map, hand-drawn by William Clark of the 1803-1806 Lewis and Clark Expedition, has been rediscovered, apparently misfiled in historical archives.

"William Clark had been the noted map-maker of the Corps of Discovery," Neely said, referring to the Lewis and Clark expedition of 1804 to 1806. "Lee doesn't really praise his maps that much, but ...

Vol. VII. of the regular edition of the "Original Journals of the Lewis and Clark Expedition," edited by Reuben Gold Thwaites, which Dodd. Mead & Co. publish, is now being sent out.