A beautifully rendered reference guide to the Great Plains portion of the famous expedition through the American West highlights the explorer's remarkable encou

In America's early national period, Meriwether Lewis was a towering figure. Selected by Thomas Jefferson to lead the expedition to explore the Louisiana Purchas

Since the time of Columbus, explorers dreamed of a water passage across the North American continent. President Thomas Jefferson shared this dream. He conceived

When the Corps of Discovery left the vicinity of St. Louis in 1804 to explore the American West, they had only sketchy knowledge of the terrain that they were t