Frederick Douglass 'Abolitionist/Editor'
http://www.history.rochester.edu/class/douglass/home.html
A thorough biography of Douglass from the University of Rochester.
Frederick Douglass
http://www.biography.com/people/frederick-douglass-9278324
Biography's website for Douglass, including a biography, quick facts, videos, and more.
The Frederick Douglass Papers at the Library of Congress
http://memory.loc.gov/ammem/doughtml/
The LoC's collection of Douglass's own papers, as well as a timeline and family tree.
Frederick Douglass Papers Edition
http://www.iupui.edu/~douglass/
A collection of Douglass's speeches, interviews, correspondence, editorials, and more.
Frederick Douglass
http://www.history.com/topics/frederick-douglass
The History Channel's Douglass page. Includes a biography, videos, related individuals and events, etc.
Narrative of the Life of Frederick Douglass, an American Slave
http://sunsite.berkeley.edu/Literature/Douglass/Autobiography/
The e-text of the novel, provided by the University of California, Berkeley.
Born in Slavery: Slave Narratives from the Federal Writers' Project, 1936-1938
http://memory.loc.gov/ammem/snhtml/snhome.html
The Library of Congress's compendium of narratives written by former slaves containing over 2,000 first-person accounts and 500 archival photographs.