- Ad*Access - advertisements from 1911-1955
- American Memory - Library of Congress digital archives, includes historical documents, images, and more
- Calisphere - primary sources documenting the history and cultures of California
- Documenting the American South - primary sources images, text, and audio files documenting Southern history
- EuroDocs: Online Sources for European History - transcriptions, facsimiles, and translations of European documents
- German Propaganda Archive - Calvine College's collection of Nazi-era propaganda
- Google News Archives - collections of old newspapers hosted by Google
- Historical Voices - spoken word collection
- New York Public Library Digital Library Collection - historical collection includes streaming video, posters, images, and more
- Online Library of Liberty - digitized primary sources on economic freedom
- Our Documents - a collection of documents from American history
- World Digital Library - access to important cultural documents
**Additional history primary sources can be found in the History & Political Science research guides.