A biography of the two men who led the two and one-half year expedition that explored the Louisiana Purchase territory and the Pacific Northwest from St. Louis to the mouth of the Columbia River.
Text, maps, and mazes follow the journeys of ten explorers, including Leif Erikson, Marco Polo, Vasco da Gama, David Livingstone, and Neil Armstrong and "Buzz" Aldrin.
Recounts the adventures of Our Dog, the dog who accompanied Scottish explorer Alexander Mackenzie on his journey across Canada to the Pacific Ocean and thus became the first dog to cross the North American continent by land.
Looks at the life of thirteenth-century Italian explorer Marco Polo, discussing his travels in China and his role in introducing Europe to the wonders of the Far East.