Venture through the unknown lands beyond the Mississippi with Lewis and Clark, their crew of army men, the slave York, the young Shoshone guide Sacagawea, and a dog named Seaman. See the party brave all kinds of hair-raising obstacles in its search for a water route to the Pacific Ocean. Rosalyn Schanzer' s marvelously detailed and engaging illustrations work beautifully with excerpts from Clark' s journal and other primary resources to re-create one of America' s greatest adventures. From hostile terrain to helpful Indians, from boating disaster to grizzly bear encounter, the people, places, and events of this amazing expedition come to life on every page of this outstanding picture book.