| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1999 | 978-1-893942-00-4 | Samuel T. Bull | Cognoscenti: Washington, D.C. |
| 2001 | 978-1-893942-40-0 | Cognoscenti | Cognoscenti Providence |
| 2002 | 978-1-893942-48-6 | '' | Cognoscenti Washington, D.C: Land of the Free (Savvy Travel Made Simple) |