- 19th Century in Print (Library of Congress)
- 19th Century in Print (Cornell)
- 19th Century in Print (Michigan)
- American Journeys: Eyewitness Accounts of Early American Exploration and Settlement
- American Periodicals (RSAP)
- Appleton’s Cyclopedia
- Archives of Maryland Online
- Audubon’s Birds of America
- Brooklyn Daily Eagle (1841-1902)
- Byron Collection of NYC Images
- Castle Garden
- Chronicling America
- Cities in the Americas
- Colonial Connecticut Records, 1636-1776
- David Rumsey Historical Map Collection
- Davies Project (American Libraries Before 1876)
- Digital Fraktur
- Documenting the American South
- Electronic Texts in American Studies
- Farber Gravestone Collection
- The Founders Online
- Harbottle Dorr’s Annotated Newspapers
- Haymarket Affair Digital Collection
- Historical U.S. Census Data Browser
- Home Economics Archive (HEARTH)
- Internet Library of Early Journals (U.K.)
- Journals of the Continental Congress, 1774-1789
- Legacy Tobacco Documents (20th C)
- Letters of Delegates to the Continental Congress, 1774-1789
- Modernist Journals Project
- Moving Uptown: 19th-Century Views of Manhattan
- National Portrait Gallery (U.S.)
- New York City Department of Records Municipal Archives Online Gallery
- New York State Library’s historical documents
- Old Sturbridge Village, History Learning Lab
- Peter Force’s American Archives, 1774-1776
- Pocahontas Archive
- Realms of Gold: Map Catalog of the American Philosophical Society
- Smithsonian I.R.I.S. (Pre-1877 exhibition records)
- Smithsonian Photography Initiative
- The Atlantic Slave Trade and Slave Life in the Americas: A Visual Record
- The Lost Museum
- Times of London, 1785-1985
- Uncle Tom’s Cabin and American Culture
- Virtual New York City
- Voting America
- Washington State Digital Archives
- Wright American Fiction (1851-1875)