Library of Congress: The American West, 1865--1900
Library of Congress: Westward Expansion: Encounters at a Cultural Crossroads
New York Public Library Digital Collections: Early Landscape Photography of the American West
Teach US History.org: Westward Expansion
University of Washington Libraries: Early Advertising of the West, 1867-1918
University of Wisconsin-Madison Libraries: Nineteenth Century European-American Views on Life in and the Peoples of the American West
U.S. History Scene: 19th Century: The U. S. West
DocsTeach: Transcontinental Railroad
Library of Congress: Railroads in the Late 19th Century
National Archives: Interstate Commerce Act (1887)
Digital Public Library of America: The Homestead Acts
Digital Public Library of America: Exodusters: African American Migration to the Great Plains
Digital Public Library of America: Boomtimes Again: Twentieth-Century Mining in the Mojave Desert
DocsTeach: Mining
Library of Congress: Territories to Statehood, the West: Topics in Chronicling America (provides selected nespaper articles from Chronicling America Collection as well as tips for searching the full Chronicling America Collection)
Digital Public Library of America: American Indian Boarding Schools
Digital Public Library of America: Reservations, Resistance, and the Indian Reorganization Act, 1900-1940
Digital Public Library of America: The Wounded Knee Massacre