- American Memory: Century of Lawmaking
- A Century of Lawmaking for a New Nation consists of online U.S. Congressional records from the Continental Congress through the 43rd Congress (1774-1875). Use the Search All Titles feature to do keyword searches such as "Louisiana Purchase" or "exploring expedition". From the Library of Congress American Memory collection.
- American Memory: The Nineteenth Century in Print
- A collection within the Library of Congress American Memory collection. Can search popular 19th century journals for "Louisiana Purchase" and other topics about Westward expansion.
- History of the American West: 1860-1920
- This collection contains 30,000 photographs that illustrate many aspects of the history of the American West. Most of the photographs were taken between 1860 and 1920. From the Western History and Genealogy Department at Denver Public Library.
- Museum of Westward Expansion
- Museum exhibits from the National Park Service include American Indians, farmers, buffalo hunters, and miners. Has a 19th Century Timeline. Future content will include audio clips in an interactive tour.
- Western Expansion and Reform (1829-1859)
- America's Story from America's Library (Library of Congress). Some of the stories, such as "Gold Discovered in California," have exceptional primary source illustrations that appear after thumbnail images clicked.
Lewis and Clark
- Lewis and Clark (U.S. Army Corps of Engineers)
- Bicentennial commemoration (2003 to 2006) of the Lewis and Clark Expedition. Includes bicentennial trivia and FAQs.
- Lewis and Clark Expedition and the USGS
- Includes links for science along the Lewis and Clark Trail, natural history links, USGS exhibits, mapping America, and sections on Native Americans.
- Lewis and Clark National Historic Trail
- From the National Parks Service. Use the sidebar to find information on History and Culture, such as the Photo Gallery.
- Lewis & Clark and the Revealing of America
- Excellent exhibit from the Library of Congress. Contains history, images, maps, and artifacts.
- Lewis & Clark Educational Resources
- Includes the Journals of Lewis and Clark.
- American Military History
- Online edition from the Center for Military History. Includes the Mexican War and battles on the frontier.
- PBS The U.S.-Mexican War
- Has prelude to war, war, aftermath,and biographies. Site Resources include links to primary sources. Requires Flash Player.
- Mexican War
- Links about the Mexican War compiled by the National Archives.
- The Avalon Project
- The Avalon Project from Yale's Law School has primary source documents available online for 19th Century Documents such as the Louisiana Purchase and the Mexican War Treaty of Guadalupe Hidalgo.
- PBS Lewis and Clark
- PBS broadcast of an episode covering Lewis and Clark's journey. This site has links to learn more about the Corps of Discovery, Native Americans, an interactive trail map, and living history.
- PBS New Perspectives on The West
- This site contains documentary materials including memoirs, journals, letters, photos and transcripts, and a library of primary source materials on the history of the American West, reflecting the five years' research that went into the production of THE WEST.
Exploration Survey Reports
- Exploration of the Red River of Louisiana, in the Year 1852
- W 7.5:M 33/3 (Govt Docs/Staff Workroom)
- by Randolph B. Marcy, Captain Fifth Infantry U.S. Army; assisted by George B. McClellan, Brevet Captain U.S. Engineers. With reports on the natural history of the country and numerous illustrations.
- Notes of a Military Reconnoissance, From Fort Leavenworth, in Missouri, to San Diego, in California, Including Part of the Arkansas, Del Norte, and Gila Rivers
- W 7.5:EM 6 (Govt Docs/Staff Workroom)
- by W.H. Emory.
- Report of the Exploring Expedition to the Rocky Mountains in the Year 1842: And to Oregon and North California in the Years 1843-44
- W 7.5:F 88/1 (Govt Docs/Staff Workroom)
- by Brevet Captain J.C. Frâemont.
- Reports of Explorations and Surveys to Ascertain the Most Practicable and Economical Route for a Railroad from the Mississippi River to the Pacific Ocean
- W 7.14: (Govt Docs/Staff Workroom)
- These twelve volumes of Pacific Railroad surveys were made under the direction of the Secretary of War, in 1853-54, according to acts of Congress of March 3, 1853, May 31, 1854, and August 5, 1854.
The Territorial Papers of the United States
- The Territorial Papers of the United States
- GS 4.13: and S 1.36: (Govt Docs/U.S. Documents Shelves)
- Covers: Northwest Territory, north and south of the Ohio River, The Territory of Mississippi, Indiana Territory, Territory of Orleans, Territory of Michigan, Territory of Louisiana - Missouri, Territory of Illinois, Territory of Alabama, Territory of Arkansas, Territory of Florida, Territory of Wisconsin.
- Indian Affairs: Laws and Treaties
- I 1.107: (Govt Docs/Reference Shelves)
- by Charles Kappler, this 7-volume set is also available online from Oklahoma State.
- Guide to American Indian Documents in the Congressional Serial Set: 1817-1899
- KF 8201 .A1 J63(Govt Docs/Reference Shelves)
- Use this guide to find congressional information dealing with Native Americans in the 19th century.
- Handbook of North American Indians
- SI 1.20/2:(Govt Docs/Reference Shelves - Native American)
- These volumes from the Smithsonian Institution provide histories of various Native American tribes, maps, and studies on culture, language, and art. A good reference source for background information.
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