The History Maker Bios series offers introductions to the lives of historical figures found in the core of every history curriculum. Filled with true stories, historical photographs, artwork, and caricatures, each title in this lively series will entertain and inform readers. In 1804, just two years after the Louisiana Purchase, explores Meriwether Lewis and William Clark began their search for the Northwest Passage. Great friends, the men had met in the army ten years earlier. Within twenty-eight months, they covered over 7,000 miles. Along the way, they encountered intriguing discoveries, dangers, beautiful countryside, and both hostile and welcoming Native Americans. They opened the door to the American West.