Linda Gondosch - Explorers - 2011 - 48 pages
When President Thomas Jefferson purchased the Louisiana Territory in 1803, the size of the United States almost doubled. Suddenly, the country stretched from the Atlantic Ocean ...
John Burrows - Juvenile Nonfiction - 2008 - 124 pages
Describes the lives of William Clark and Meriwether Lewis, emphasizing their expedition across North America to explore the uncharted territory of the Northwest United States ...
Stephen E. Ambrose, Sam Abell - History - 1998 - 255 pages
"Interweaves choice entries from the explorers' journals with the author's own latter-day chronicle of how he and his family continue to discover the Trail today."--Jacket.
Cheryl Harness - Juvenile Nonfiction - 1996 - 32 pages
Relates the history of the Pony Express from when it began to carry messages across the American West in April 1860 until the telegraph replaced it in October 1861.
John Hudson Tiner - Religion - 1975 - 144 pages
A biography of the seventeenth-century English scientist who developed the theory of gravity, discovered the secrets of light and color, and formulated the system of calculus.