| 1. | New York: Harper 1941: Modern Mexican Painters. Mertens, 1941 : Eine neue Korallennatter aus Mexiko. |
| 2. | San Francisco: Harper & Row, 1988. San Francisco : Harper & Row, 1988. |
| 3. | Harper chose to wear number 3 instead. Bjørdal choisit le maillot numéro 3. |
| 4. | Peter Harper supports Surfrider Foundation Europe. Nicolas est ambassadeur de Surfrider Foundation Europe. |
| 5. | Defense of Harpers Ferry September 12–15. Bataille de Harpers Ferry (12 - 15 septembre). |
| 6. | New York: Harper & Brothers, 1867–70. New York, Harper & Brothers, 1867-70. |
| 7. | Harper Perennial Modern Classics / HarperCollins Publishers. A History (éditions Harper Perennial / Harper Collins Publishers. |
| 8. | Ben Harper leaves Amber Pacific. Punknews. ↑ (en) Ben Harper leaves Amber Pacific. |
| 9. | A very few are Harpers. Un petit nombre d'entre eux sont des arbustes. |
| 10. | In 1996, Harper married his first wife, Joanna. En 1996, il épouse en premières noces Joanna Harper. |