| historyjournal.com | Gilder Lehrman E-Journal of American History |
| oxydex.com | Key American Historical Documents and Subjects Compendium |
| archives.gov | The Emancipation Proclamation |
| douglassarchives.org | Douglass: Archives of American Public Address |
| gmu.edu | Interpreting the Declaration of Independence by Translation |
| gpoaccess.gov | Core Documents of U.S. Democracy |
| gilderlehrman.com | Gilder Lehrman Collection |
| thomasnast.com | T H O M A S N A S T . C O M |
| impeach-andrewjohnson.com | The Impeachment of Andrew Johnson |
| hpol.org | History and Politics Out Loud |
United States , Colorado , Englewood