| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Life of Alexander von Humboldt 2 Volume Set: Life of Alexander von Humboldt: Compiled in Commemoration of the Centenary of his Birth: Volume 1 | 978-1-108-04175-1 (1-108-04175-2) | 2012 |
| Life of Alexander von Humboldt 2 Volume Set: Life of Alexander Von Humboldt, Volume 2 | 978-1-108-04176-8 (1-108-04176-0) | 2012 |