- Avalon Project: Documents in Law, History, and Diplomacy
- Best of History Web Sites
- Hanover Historical Texts Project
- The History Guide
- HistoryWorld
- HyperHistory Online - Over 2,000 files covering 3,000 years of world history
Western Civilization, 300-1500CE
Western Civilization, 1500CE-present
- Cold War International History Project
- Elizabethan Era
- Holocaust Educational Resource (Nizkor)
- Holocaust Encyclopedia
- Internet Modern History Sourcebook
- The Napoleonic Wars Series
- Slave Movement During the Eighteenth and Nineteenth Centuries
- The Thirty Years' War Home Page
- United States Holocaust Memorial Museum
- The Victorian Web
- Western Civilization Webography Project
- The World War I Document Archive
- World War II Resources: Primary Source Materials on the Web
- Africans in America
- The American Civil War Home Page
- American Memory from the Library of Congress
- American Presidency Project
- The American Revolution
- The Archive of Early American Images
- A Biography of America
- The Founders' Constitution: "This collection of thoughts, opinions, and arguments of the Founders is meant to be useful to different kinds of readers, and hence useful in a variety of ways."
- Harper's Weekly
- Historical Maps of the United States
- IPL2: United States History
- Primary Documents in American History: The Library of Congress Collection Guides & Bibliographies
- The Presidents of the United States
- American Women: A Gateway to Library of Congress Resources
- Diotima: Women & Gender in the Ancient World
- Discovering American Women's History Online
- Internet Women's History Sourcebook
- National Womens' History Museum
- National Women's History Project
- Women Soldiers of the Civil War
- Women Working 1800-1930
- Women's History Archives at Smith College
- Abraham Lincoln Presidential Library
- Chicago: City of the Century (PBS)
- Chicago Imagebase (University of Illinois)
- Encyclopedia of Chicago (Chicago Historical Society)
- McHenry County Historical Society
- Illinois Labor History Society
- Illinois State Archives
- Illinois State Historical Society
- Urban Experience in Chicago: Hull House and Its Neighbors, 1889-1963