In 1803, as Meriwether Lewis and William Clark set out on their historic expedition west, much of the landscape they were to encounter was shrouded by mystery. Many believed that California was an island and that the waves of the Pacific Ocean crashed on beaches just west of the Appalachian Mountains! Two centuries after the expedition, the University of Virginia Library compiled this collection of early North American maps. Lewis and Clark: The Maps of Exploration 1507-1814 develops in detail the daunting amount of speculation and misinformation that accompanied Lewis and Clark on their trek across this great continent.