| 1. | In 1834, he married Susan A. Houghton. En 1834, il se marie avec Susan Houghton. |
| 2. | Beyond Innocence (Boston: Houghton Mifflin, 2001). Au-delà de l'innocence (Boston: Houghton Mifflin, 2001). |
| 3. | John Houghton was the first to be executed. Houghton est le premier à être exécuté. |
| 4. | It is the county seat of Houghton County. Elle est le siège du comté de Houghton. |
| 5. | Thomas Beet, of Great Houghton, 18 February 1793. Thomas Beet, de Great Houghton, 18 février 1793. |
| 6. | The book won the Houghton Mifflin Literary Award. Il a remporté le Houghton Mifflin Literary Award. |
| 7. | Terrorism and 9/11: A Reader (edited; Houghton Mifflin, 2002). Terrorism and 9/11: A Reader, Houghton Mifflin, 2002. |
| 8. | Copyright 2009 by Houghton Mifflin Harcourt Publishing Company. Copyright © 1996 by Houghton Mifflin Harcourt Publishing Company. |
| 9. | Boston: Houghton, Osgood, 1879. Boston : Houghton; Osgood, 1879. |
| 10. | Boston: Houghton, Osgood, 1879. Boston : Houghton; Osgood, 1879. |