People
- Biographical Directory, United States Congress
- The Political Graveyard
- Virtual American Biographies (through 1899)American Heritage Blog
Books
Americana
- Digital History Home
- Blog 4 History: American & Civil War
- Conversations with History
- Battleship Maine 1898
- Ellis Island
- History Central: U.S. Presidential Elections
- The History Chef blog
- History News Network (HNN)
- House History (Office of the Clerk of the US House)
- Library of Congress Manuscripts
- Lincoln Library (Springfield, Illinois)
- The Moderate Voice
- New Deal Network (FDR and the 1930s)
- SEC (Securities and Exchange Commission) History
- Six Degrees of Millicent (Millicent Fenwick site)
- Subversify
- U.S. Senate Historical Office
- U.S. Congress House History
- U.S. National Archives and Records Administration
New York
- Boss Tweed’s Saloon
- The Bowery Boys: New York City History
- Driving around New York City, 1928
- New York Public Library
- New York Historical Society
- New York Municipal Archives
- Taminent Library & Wagner Labor Archives
Family History
- Ancestry.com
- Jewish Genealogy Blog
- JewishGen
- Jewish History Channel
- Jewish Record Indexing, Poland
- Nedar Foundation (Great links on Jewish Poland)
- Polish national archives
- Polish Roots
- Tracing the Tribe: Genealogy Blog
- Virtual Shtetl
Legal – Crime history:
- Clarence Darrow Home Page
- Constitutional Journal
- Famous Trials
- First Amendment Center
- Legal History Blog
- OFWLAW Blog
- Tickle The Wire.com
Socialists, Anarchists
- Anarchy Archives
- Emma Goldman papers
- Lusk Committee papers(New York State legislature)
- Marxists Internet Archive
- Red Scare (1918-1921) Home Page
- Victoria Woodhull page
Images
- Billy Ireland Cartoon Library, OSU
- The other Ken Ackerman
- Library of Congress Prints and Photographs
- Nineteenth CenturyMagazines
- Photos from Chicago Daily News (1902-1933)
- Nineteenth Century Magazines
Ocean Divers:
- Diving Heritage
- Diving History — Cigarette Picture Cards
- Historical Diving and Equipment
- Scuba Inventors