Internet History Sourcebook
Undoubtedly the most extensive collection of primary sources available online. There are sourcebooks focusing on different time periods and key historical subjects, including women's history, science, and African history.
- Digital Public Library of America: primary source sets
Wide range world history sources from ancient, medieval and modern time periods. The sets use letters, photographs, posters, oral histories, video clips, sheet music, and more.
Huge source of primary sources from ancient, medieval and modern Europe.
- Eyewitness to History
Large collection of eyewitness sources to historical events from ancient to modern history - both U.S. and Europe.
- Hanover Historical Texts Collection
Large collection of global primary sources listed by century and country.
Collection of primary sources from ancient, medieval, early modern and modern periods.
- The Avalon Project