Web Sources:

Discovering Lewis & Clark
www.lewis-clark.org

National Geographic: Lewis & Clark
www.nationalgeographic.com/lewisandclark

Lewis & Clark: The Journey of the Corps of Discovery
http://www.pbs.org/lewisandclark/index

The Lewis & Clark Journey of Discovery
http://www.nps.gov/jeff/LewisClark2/HomePage/HomePage.htm

Jefferson, Thomas. Letter to Correa da Serra Popular Forest, 26 April 1816. From
Revolution to Reconstruction. Retrieved August 7, 2003 from
http://odur.let.rug.nl/~usa/P/tj3/writings/brf/jefl244.htm

Books:

Ambrose, Stephen E. Undaunted Courage: Meriwether Lewis, Thomas Jefferson, and the
Opening of the American West. New York: Simon & Schuster, Inc., 1996.

Lourie, Peter. On the Trail of Sacagawea. Honesdale, PA: Boyds Mill Press, Inc., 2001.

Patent, Dorothy Hinshaw. Animals on the Trail with Lewis and Clark. New York: Clarion
Books, 2002.

--------. The Lewis and Clark Trail: Then and Now. New York: Dutton Children's
Books, 2002.

Pringle, Laurence. Dog of Discovery: A Newfoundland's Adventures with Lewis and
Clark. Honesdale, PA: Boyds Mills Press, Inc., 2002.

Photo Credits:

(Montana, Sculpture of Lewis, Clark, and Sacagawea)
Bureau of Land Management/Montana State Office

(Thomas Jefferson)
Library of Congress, Prints & Photographs Division [reproduction number LC-H8-CT-C01-104]

(Thomas Jefferson Holding the Declaration of Independence)
Library of Congress, Prints & Photographs Division [reproduction number LC-USZ62-75384]

(Meriwether Lewis)
Library of Congress, Prints & Photographs Division [reproduction number LC-USZ62-20214]

(Grave site of Meriwether Lewis)
Photo courtesy of Larry and Leneta Kitchel

(List of Indian Presents Purchased by Meriwether Lewis)
US National Archives & Records Administration/ARC Identifier: 300353

(William Clark)
Library of Congress, Prints & Photographs Division [reproduction number LC-USZ62-10609]

(Newfoundland puppy, four months old)
Photos courtesy of Blake Sparkes and Rob and Kristy Schieber

(Geyser in Yellowstone National Park)
National Park Service Photo

(Sgt. Charles Floyd Monument)
Photo courtesy Sioux City Convention Center

(Two Prairie Dogs)
Ron Singer/USFWS

(Alert Prairie Dog)
Claire Dobert/USFWS

(Pronghorn)
James C. Leupold/USFWS

(Pronghorn on the Prairie)
Curtis Carley/USFWS

(Sacagawea carrying Jean Baptiste)
Photo courtesy North Dakota Department of Commerce, Tourism Division

(Sacagawea golden dollar coin)
United States Mint image

(Grizzly Bears)
Chris Servheen/USFWS

(Grizzly Bear Mother with Cubs)
National Park Service Photo

(Mount Hood)
Bureau of Land Management/photo by T. Hogervorst

(Fort Clatsop National Memorial)
National Park Service Photo

(Nineteenth Century Illustration of the Bitter Root River)
Library of Congress, American Memory collection [U.S. Serial Set, Number 1054, House Executive Document 56, 36th Congress, 1st Session]

(The Bitterroot Mountains, Lee Metcalf National Wildlife Refuge)
John and Karen Hollingsworth/USFWS

(Pompeys Pillar National Monument)
Bureau of Land Management/Montana State Office

(Another view of Pompeys Pillar)
Bureau of Land Management/Montana State Office

(Present-day St. Louis, with the Gateway Arch in the background)
National Park Service Photo

(The Jefferson National Expansion Memorial)
National Park Service Photo

(Missouri state quarter, 2003)
Quarter-dollar coin image from the United States Mint

(Statue in St. Louis commemorating Lewis, Clark, Sacagawea, and Seaman)
Photo courtesy Missouri Division of Tourism